WebKitGTK 2.23.90 Adds Support For JPEG2000, More Touchpad Gestures
Interestingly, this WebKitGTK release adds support for JPEG2000. That support is a bit surprising considering outside of Apple's Safari browsers, JPEG2000 isn't really supported by other web browsers for this offshoot of JPEG that has never been widely adopted. But now nearly two decades after JPEG2000 was published, it's at least supported by WebKitGTK.
WebKitGTK 2.23.90 also expands its touchpad gesture support in this release by now supporting the back/forward gesture as well as pinch zooming.
While WebKitGTK earlier picked up experimental web sandboxing support, it's been removed from this release as it's not yet deemed ready for a stable release.
More details on this near-final release towards WebKitGTK 2.24 can be found via this mailing list post.