OK, I didn't take the time to read all 41 pages, cuz, to be honest, I have a life. But...in regard to 1/22 and what it holds, 1/22 was the date included in the original internal Verizon document that was leaked back on 11/09. It discussed both the 12/11 and 1/22 updates. I'm not sure where all this talk of a pre-update for 2.1 etc really comes from. 1/22 was identified as a target date for an update as far back as 11/09...that's right, over 2 months ago. And, if you read the document, it is pretty well defined what Verizon was hoping to have included at that time.
Motorola DROID and HTC DROID Eris OTA updates rumored to hit December 11? Boy Genius Report
Now, it's possible that they have added more items since then, but, they came pretty close to their 12/11 date, so I see no reason to think they won't be close on this one.
Also, if you remember, Verizon provided a communication that leaked the day before 2.0.1 started getting pushed out. It was the text that people would see when they got the update. I haven't seen anything like that yet, and wouldn't be surprised if something like that is the precursor to the next push.
One of the things about the 12/11 update was that it didn't happen just on the 11th; it started on the 7th in batches. In theory, we should've hear of updates last Monday.