Accoring to TechArp, Microsoft is targeting a release candidate (RC) version of Windows Vista SP2 for February 2009. Microsoft sent invites to testers in mid October asking them to take part in the SP2 beta. Build 16489 was released to special group of testers in late October but Microsoft has been quiet since then. TechArp also believes the RTM of Vista SP2 will be in April 2009. Microsoft is readying SP2 so there are additional incentives for customers to upgrade to Window Vista now, instead of waiting for Windows 7. Microsoft will include Windows Search 4 in Vista SP2 along with Bluetooth wireless support (including latest BT 2.1 fixes), support for the new VIA 64-bit CPU and additional application compatibility updates.