Anyone can give me an advice on this?
If the price of upgrade kit for H2D is lower than H2S’s one, it makes sense.
What are the letters for? Maybe D is less at something than S.
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Arguably the H2C will have more advantage for those wishing to print mulitcolour both in terms of time and poop as soon as you go above 2 colours.
Looking at the video BL put out for the nozzle changer that is the H2C it will require some work to fit the mechanism to a H2D both on the toolhead and panels off to run cables to the main circuit board.
H2S will need a new toolhead, filament buffer at least to get the C standard.
Price wise there is no way Bambu will make it cheaper to go the H2C spec via the H2S compared to the H2D - look as laser costs as an upgrade kit versus the factory version.
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A “DP_lover” guy asking about "D"s and "S"s … username checks out! 
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my predection:
~3000€ for the H2C Combo with one or two autochanger Hotend(s)
~800€ for the H2D upgrade kit with one or two autochanger Hotend(s)
~1600€ for the H2S upgrade kit with one or two autochanger Hotend(s) where you basically have to go from an H2S to an kind of H2D and finally to the H2C.
I think printer (H2S/H2D) + upgrade kit will be more or less the same as just buying the H2C directly. If you dont buy the H2C directly, you will “pay” with your time for the upgrade.
This is a preliminary announcement from BambuLab – as they themselves wrote, “the first attempt.”
I wouldn’t even bother thinking about what the upgrade will cost today and what advantages and disadvantages it will have, because even BambuLab certainly won’t be able to answer those questions.
And until the system is introduced, I’m not even sure whether there will be an upgrade for the H2D and H2S – because “technically possible” doesn’t necessarily mean it will come and make sense.
For my part, I’ll watch the whole thing when it’s released and then wait for the “second attempt” of a good solution.
Furthermore, the only European 3D printing manufacturer has announced a tool changer for one of its latest models…
Confident BL do know exactly what the costs are - there own blog post states the hardware was ‘locked months ago’ and software has been the hold up instead.
They’ve also stated upgrade kits will be made available but it’ll be cheaper to buy a H2C instead of upgrading a 2D or 2S model - you’ll have to pay for the extra hardware on the toolhead instead of the difference between the 2C and 2D/2S hardware cost.
Advantages are clear too, up to 7 colours in a print and only a purge tower instead of poop waste.
Disadvantages are less build volume which hits the 2S hardest.
My 2D already has the mounting points in its chassis to fit the Vortek when comparing the released video positions, there are several unused connectors on the main controller board with a cluster of 3 in the top left, ie where you would be looking to connect the hotend swapping mechanism to.
All of that makes it clear BL had the hardware side of this ready prior to H2D release and manufacture. I’d put some money that the 2C was the model they wanted to launch the H series with but it was taking to long to sort the software.
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Thanks! I didn’t know! 
Current Euro Prices
H2S Combo 1399
H2D Combo 2199
I doesn’t make a lot of sense to me why there is an 800 Euro difference - I think it should be quite a lot less.
My prediction is that H2C will come in a little more than the current H2D price - say 2399 for a Combo with AMS2pro+3 nozzles.
H2D will reduce 200 Euro to say 1999 - so still a 600 Euro premium over the H2S and 400 less than H2C.
upgrade kit with 3 nozzles for H2D 500 Euro - bringing a 100 premium of printer + upgrade Kit
upgrade kit with 3 nozzles for H2S 1100 Euro - I think the cost would have to expensive to protect H2D and H2C sales.
Unless they decided to instead make lower printer + kit cheaper than H2C.
They might also offer a double combo H2C with 2xAMS2Pro and the full six nozzles - probably for around 400 Euro more - so 2799
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I’m pretty sure they even mentioned the upgrade, is so H2D sales wouldn’t drop off a cliff.
Also convenient the announcement came earlier than they might have wanted to, due to other tech coming out. Not that U2 is even targeted at same audience…
H2D combo is currently 300 eur off, so that might make the upgraded path to H2C feasible….unless the 1899 is the new normal price for H2D combo. It almost have to come down, to make room for the new….
The £700 cost for the Vortek upgrade is just too steep when I look at the current cost of the 2C ultimate combo, £1800 current retail for a 2D with 2 x AMS or £2400 for a 2C with 2 x AMS and a HT plus 3 additional 0.4mm Vortek nozzles and an adapter tube.
£600 split before you factor in £30 per Vortek nozzle and a HT AMS removing another £200 in product value from that bill.
The upgrade paths don’t make a lot of sense, looking at the kits I think the 2S goes to duel nozzle and its £790 for the upgrade kit - this works out at £1989 for a 2C when upgraded from a 2S which is £10 cheaper than a factory 2C!
As they both come with a 2S labelled front panel the only clue will be the lack of windows on the case.
Yeah, I’m really upset with the pricing strategy. It’s good for the H2S owners but unfair to H2D owners.
Just bit the bullet and went for a 2C ultimate 10w laser to replace my 40w H2D.
Extra hardware gives me stuff that I would end up wanting/needing, ie another AMS, more Vortek nozzles and saves the faff of the upgrade process,
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EDIT: The H2S Vortek upgrade DOES include a 2 nozzle tool head.
I previously stated that it did not which was my misunderstanding.
Apologies for any confusion caused!
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I think it does.
The kit list and photo for the 2S show the 2 path filament buffer from the 2D/2C and the kit contents also list a left and right ‘filament cutter stopper’.
They might disable it via software but that doesn’t make a lot of sense when they are providing additional hardware with the cutters.
both H2S and H2D will become a full H2C with the correspondig kit.
You are making an incorrect statement.
If you upgrade the H2S it is a dual nozzle H2C. A full new tool head s included in the kit.
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You are right!
Having the H2S only, I had not appreciated that the H2D toolhead was a single combined unit, but thought it was a pair of individual heads in one enclosure, so I thought the upgrade replaced the right hand head leading the left in place, and hence for the “S” good get just the right head with some kind of mounting plate.
The other thing that reinforced my misunderstanding is that the H2S faq on the wiki said (and still says) that you cannot upgrade an H2S to an H2D.
And yet now you kind of can, because the H2S Vortek kit includes the parts that do just that, at least the key feature of the dual nozzle.
That does make the kit more attractive for me as it adds more functionality than just the Vortek.
SINCERE APOLOGIES TO ANYONE I MISLED!
The H2S can still not be upgraded to an H2D. So the statement on the wiki is correct.
You can only upgrade it to an H2C, which is in fact also a dual nozzle head, but not an H2D head.
It might be that you can unofficially upgrade an H2S to an H2D with the parts coming from an upgraded H2D.
The only problem might be that the serial number of the AP board is not valid anymore. That depends on how Bambulabs treats that.
All the information I can find implies that installing the Vortek upgrade kit on an H2S converts it to an H2C (including an H2C front panel).
I’m wondering if there are any significant differences between an H2C that is an H2S plus the upgrade, and a new build H2C.
In particular will the upgraded machine have the same
- power supply capacity,
- ventilation and air filtration
- upgrade options - especially the 40W laser