New version of g++, a good reason to upgrade

My Ubuntu 10.04 runs fine on my workstation except for one thing ... its g++4.4.3 does not have the new c++ language feature which is used in software like CppBugs and its R binding called rcppbugs. The idea behind these two packages are very interesting, which gives me a good reason to upgrade to a new version of the OS (Debian, Mint, or Ubuntu).