Nope. Some people in the media mistakenly think there's an early deadline for adding cap charges to this season, but it can be done right up until the final game. The only deadline is for increasing a player's base salary for this season. After a certain date, any increase in base salary for the current season is treated like a signing bonus and is prorated. But there are lots of ways to add to this year's cap after that deadline, including extending a player's contract and giving him a signing bonus.
And here's our list of potential UFAs and RFAs, as of right now --
Flozell Adams (UFA)
Ken Hamlin (UFA)
Keith Davis (UFA)
Patrick Crayton (UFA)
Jacques Reeves (UFA)
Nate Jones (UFA)
Julius Jones (UFA)
Marion Barber (RFA)
Chris Canty (RFA)
Tyson Thompson (RFA)
Joe Berger (RFA)
L.P. Ladouceur (RFA)