Not upgrading from DT1. No doubt the DT2 has massive upgrades. But my perspective on stuff like this is often to ask “well, have I hit a brick wall before knowing the new version was coming?”. No.
It obviously depends on the individual. For example, how much are you trying to do with minimal gear, maybe its mainly for live play, etc.
For me, the DT1 still has the same things to be explored as it did before any inkling a DT2 was even a possibility. I do feel that wince when new things are announced however, of somehow being left in the dust, like my old version is lacking, like im missing out on the winning ticket to the sonic mountain top, etc.
But in this way, it actually fortifies my love for the DT1. I talk alot with a friend about this stuff, limitations in music creation. And personally, after acquiring more gear than I need and knowing very well about the GAS conundrum, Im learning to deny the impulse to fall for every NEW thing or version that comes out. Or I should say, be distracted by it. I mean, you look at the life of how many vintage synths that were only V1s, with no option for a firmware change even. And those are still being sought after.
To me, this new release couches DT1 in the realm of a classic. With its yellow screen and all, Im not ready to abandon my baby boy☺️