Wt 4.3.0 was released almost a month ago, so it’s about time for a patch release. Wt 4.3.1 (and Wt 3.6.1) is a tiny patch release, with the most notable fix being an issue in the destructor of WWebWidget when user-defined ids were used. There will be no JWt 4.3.1 since nothing has changed to JWt.
Read the release notes for more information.
Here are the links:
Wt 4.3.1 (C++): download wt-4.3.1.tar.gz (release notes)
Wt 3.6.1 (C++): download wt-3.6.1.tar.gz (release notes)
Binary builds for Windows are available on the GitHub releases page.