The PPA is on 0.8.6, which is very recent (just missing 0.9, but I'm gonna hopefully upload that today). What you're referring to is the Ubuntu package distribution, which is very, very, very out of date (to the point of it being largely non-functional).
0.9.0 was posted earlier today.
I second this. The PPA is very outdated (I think using < 0.4). The only way I could think of manually upgrading would be to pull the latest Git Tag for 0.9.0 and re-make (compile) from source.