GCC 4.5 Release Candidate Is Finally Here
GCC 4.5 is now dependent upon the MPC (Multi-Precession) library, brings new compiler optimization improvements, better supports C++0x, libstdc++ enhancements, support for new ARM processors, and much more. An extensive and lengthy list of all the changes set for GCC 4.5 can be found at GNU.org.
The GCC 4.5 Release Candidate source can be found in this FTP snapshot directory. GCC 4.5.0 should be officially released in time for the Linux distribution updates later into the summer and certainly by the fall with Ubuntu 10.10 and others.