Here's a follow-up article PFT did indicating all the numbers in the first article are a done deal, and have been for a while now:
Last year, teams had until February 28 to decide whether to carry over unused salary cap space. This year, the deadline came two months early.
Per a source with knowledge of the schedule, teams had until December 29 to decide whether to shift remaining cap space to 2013. Thus, the numbers we posted last night reflect not the available carryover but the actual amounts that were carried over.
Edit: It appears the link(s) in the OP both go to last season's article - hopefully I'm not jumping to conclusions, but here's where I think the second link was supposed to go: