GCC 4.4.0 brings improved C++0x support, a new register allocator and with the merge of the Graphite branch, which is “a new framework for loop optimizations based on a polyhedral intermediate representation”. More changes are detailed in their release notes.
As for Ubuntu 9.04, all the lovely bits of changes are documented in the Ubuntu 9.04 overview and dont forget the updated UbuntuGuide for Jaunty. Download links and local Australian Mirrors for iinet & internode.
Woo yeah for Friday.