I answer here, to avoid and answer same requests I get on a regular basis.
I want to stay some kind of synced with official debian repo, I just wait till wx2.8 is at least in debian sid/unstable, so I backport it to testing and stable and then compile the pkg's against them. Why? For testning because it stays at least ten days in sid before it enters testing, and for stable, because it wont enter it before the next major release. Why I wait for pkg's to backport instead of just creating it? Because that way I can at least asure you, that there is no trouble while upgarding. Packaging of libs is a bit more difficult than a normal prog, and it's very possible, that the original maintainer chooses another way than I.