Posted more details in another topic. But it comes down to 2 things:
a) The UM3 was planned as the UM2.1 like... 3 years ago? We really really wanted this as an upgrade. But it's not feasible due to our most important requirement "only release something if it's up to the task"
b) While it looks almost the same from a distance. Almost every component that is worth something has changed. From electronics to printhead.
You are free to collect the right parts and build dual in your UM2 yourself. I know that it can work, but it is a lot of tinkering to get working right. Also, be careful with PVA. We didn't engineer a different hotend for that without a reason.
Indeed I don't think you'd get any UM3 part right now, but in general genuane ultimaker parts are real easy to buy, you can get every single bit ... and if a part is not listed you look up the itemnumber on the BOM (on github) and you can still order it...
I don't know any other company doing this so well...
*normally Ultimaker puts the design files and BOM of a machine on github 6 months after release of a machineEdited by Guest
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