Sources: The @NFL salary cap has been sent to clubs. It is set at $123 million. Up from $120.6M—
Ian Rapoport (@RapSheet) February 28, 2013

This would be over a million more than expected. Hardly the kind of money to make a major difference, but every little helps. The Jets should currently be just over $8m under the adjusted cap.

UPDATE:

Mort’s sources have a slightly higher number:

Teams get more money to spend – salary cap for new league year is $123.9 million per team after accounting of league revenues, per sources.—
Chris Mortensen (@mortreport) February 28, 2013

This would put the Jets just over $9m under the cap.