With only 8 guys on the current practice squad after today, my takeaway is that the Pats intend to fill spots 9 and 10 with guys who are currently on the 53. These are guys he thought would be claimed off waivers today, and he thinks will be ignored on waivers tomorrow because most teams consider their rosters "set" at the end of the day today. Belichick has done this in the past before.
So the questions are, which 2 guys would they be, and who will replace them on the 53? My guess on one of the replacements is Keyshawn Martin - reporters say his locker is still intact; Belichick may have had a wink/nudge agreement to bring him back and felt there was no chance he would be claimed off waivers. No idea on the other guy; perhaps a trade is in the works?
As for the guys on the 53 who could be headed to the practice squad, my number one guess is Mongo. 10 O-linemen is a lot, he is still a bit raw, and he would likely have been claimed today. They other guy could be, dare I say, DJ Foster if the additional 53 man replacement is a between the tackles running back.