This release is full of fixes, but not many features. A big one is that this release uses LWJGL 3.3.3 again, with NFD 3.3.1 used for file dialogs. This means the various weird bugs some users on Linux have noticed should be gone, as long as earlier releases like 1.13.0.2 worked. Counterintuitively, the brand-new (and apparently rather-far-from-compatible) Wayland system for Linux actually works better with LWJGL 3.3.3 than LWGL 3.3.6, because older LWJGL3 from pre-Wayland days uses a stable legacy API rather than an incomplete current API. Using NFD 3.3.1 isn't exactly optimal, since it's quite an old version and some issues have probably been encountered with it... but it's considerably better than any of the NFD releases from 3.3.2 to 3.3.6, all of which had bugs that make them essentially unusable. The version for a project is now correct in subprojects. TeaVM uses a valid version now, which I think is current. There's at least some theoretical support for 32-bit x86 Windows again, if you somehow have a JDK 17 on one of those OSes. There's a link to a recommended JDK in the Social bar, so people can be quickly referred to where to click, if needed. Non-zero exit codes are able to be returned from LWJGL3 apps now, which could help debugging. We also don't need to replace libGDX ScrollPane source anymore.
Well, that's pretty much all of it. I think this squashes more bugs than it introduces!