PCSX2 SVN r4995 is released. PCSX2 is an open source PlayStation 2 (PS2) emulator for the Microsoft Windows and Linux operating systems. With the most recent versions, many PS2 games are playable (although speed limitations have made play-to-completion tests for many games impractical), and several games are claimed to have full functionality.

PCSX2 SVN Changelog:
r4992
GSdx: Better multi-threading for the sw renderer. Threads must be synchronized lot less, 1/10th in average, can run parallel longer and uses more cpu (bit more empty spinning, too). There could be some new bugs, as usual.
r4993
GSdx: Polished the recent changes a bit. Single threaded mode should be back to normal, 2-4 threads might be faster or slower. All in all, it has a lot more potential now. Rendering is almost as separated as with d3d, everything needed is packed and copied for the worker threads, synchronization between local memory and the temporary buffers is properly done. This model could also be back-ported to d3d. Or the software rasterizers could be hardware assisted somehow, there are a lot less sync points where those buffers should match with the contents of the local memory.
r4994
GSdx: Little bug slipped through.
r4995
GSdx: fixed shared_ptr for GCC, but it does not seem to be thread-safe in 4.4.5.

Download: PCSX2 SVN r4995
Source: Here