With all of the highest priority bugs being cleared for GCC 4.5, the code-base will now be frozen and a release candidate will be made soon. The trunk will be frozen except for documentation changes beginning the 2nd of April, but a release candidate will not come until after Easter (4 April).
Novell's Richard Guenther issued this GCC 4.5 status update. His mailing list message concludes with:
Overall GCC 4.5 looks good. Thanks for the previous two weeks of bugfixing!
Please use the Easter holidays for testing and not for introducing bugs ;)