While the rest of us have moved on to Windows Phone 7, there once was a killer device (sans CPU) called the Touch Pro 2 running Windows Mobile 6.5. And although some of us have forgotten it, it looks like Verizon and HTC have not as they just released a maintenance package, MR3, on November 30th. It's last update was in June.
Unfortunately, no change log is present though we may get some feedback from fellow readers on any changes. Good on Verizon and HTC for keeping with those updates.
Source PCD; Thanks, Matt H. ,for the tip!