Ubuntu 7.04 (Feisty Fawn), due to be shipped on April 19th, will ship with both wxWidgets 2.6 and 2.8 (currently 2.8.1).
I'm currently on Herd-5, but I have yet to try to build Code::Blocks with the version of wxWidgets 2.8 Ubuntu ships with.
Guess I'll try with stahta01's patches one of these days