Of course new projects (expect some news around E3) will have Linux support; that is the whole point of putting so much effort into a native port for D:OS. The next games will built on the same game engine and gameplay mechanics (with updates).
The announcement being teased on Instagram will include more information on the Linus version release.
More timely updates on the delays probably would have helped. However, there were more regular updates with the delays for the Windows release, as well, which didn't stop accusations of broken 'promises' and lies when estimates were not met, etc. Most people of course supported the reasons for the delay (adding additional features and changes based on feedback, etc).