From the announcement: 'This version of Apache is a major release and the start of a new stable branch. New features include Smart Filtering, Improved Caching, AJP Proxy, Proxy Load Balancing, Graceful Shutdown support, Large File Support, the Event MPM, and refactored Authentication/Authorization.'
agree with hostpc, there is potentially incompability problems with various modules and such so I would wait for others to find and fix issues before diving in.
