Hm, bugproof is a bold claim, in fact C::B runs way worse with wx2.9 than wx2.8.
The really interesting version (if everything goes to plan of course) will be 3.2, there we'll have the feature to move aui windows between notebooks, which is one really needed feature in C::B.
Indeed, it may be too soon to release binaries using wx3.0... unless sufficient testing deems such a build stable enough.
For the time being, I just upgraded my build to use TDM-GCC 4.8.1, which is on its own a big deal.