While Microsoft officials had told its core of elite beta testers to expect the next Windows Vista milestone on Tuesday, February 21, it now looks as Microsoft is now planning on delivering the code later in the week. Our sources are saying Vista Build 5308 will likely be christened the February Community Technology Preview (CTP). And it's now sounding like testers will be able to start playing with that build on Friday or Saturday. Microsoft, for its part, isn't talking publicly about its CTP plans, other than to maintain the next test build will be ready in this calendar quarter. Update: The lates: It now looks like Wednesday February 22 is CTP D-Day.