After being in development for years, wxWidgets 3.0 went into RC state
at the beginning of October. Before closing out October, the open-source tool-kit project is now out with its second release candidate.
The major wxWidgets 3.0 release is to bring features like GTK3, better/simpler Unicode support, a new OS X / Cocoa port, 64-bit OS X handling, and many other features and improvements. The aforelinked RC1 article covered more details of wxWidgets 3.0.
There's more bug-fixes and smaller work in yesterday's 3.0 RC2 release. For those wanting to learn more about wxWidgets 3.0 and its upcoming stable release, visit wxWidgets.org