I enjoy playing Depth of Extinction, and I appreciate that you support Linux as target platform. Also, one of the reasons for me to support your game was that you offer a DRM-free build on Itch. Don't get me wrong, I wish you the best of luck with your Steam release. But I'm quite unhappy that you don't want to continue updating your Itch repository.
Thanks for the feedback. If it seems like there is demand to keep updating here on itch, then we will probably do that.
We will definitely have at least one (and possibly multiple) DRM-free option at launch aside from Steam so you should be safe to get the final game for sure.