"The launch of the Cortex-A15 MPCore processor marks the beginning of an entirely new era for the ARM Partnership."
Well, that's no understatement!
Its simplest/lowest performance version (for next-generation smartphones) offers "5x performance improvement over todayâ€™s advanced smartphone processors, within a comparable energy footprint", and it scales up to quad-core configurations and speeds of up to 2.5Ghz, clearly breaking the boundaries of traditional applications where ARM has been used, and well into x86 territory.
Some companies are already using ARM in server configurations, something that probably will increase with Cortex-A15. Virtualisation is built right into the server variants of these chips, and they can support up to one terabyte of memory.
http://www.arm.com/about/newsroom/arm-u ... lities.php
The road map suggests that 2012 will be when it gets released.