As I discussed before, I'm no longer running Vista on my tablet. 5231 broke the Ink control, and the Nov CTP (which was supposed to include a fix) was cancelled.
Hilton already mentioned that we'd have a Dec CTP. I originally heard that the build was expected today (Dec 16), but Paul Thurott said that it would be on Mon.
Oh well - it's getting late, but I guess there's still a chance we might see this tonight considering Microsoft is on PST.
Update: Build 5270 has been released to beta testers. Although the article indicates that it would be available to MSDN and TechNet subscribers "later today" (today being 12/19), it is still not available as of Tues morning (12/20).