This pack adds the following jerseys that are introduced in the 2012/2013 season:
Bobcats: Home, Away
Bulls: Christmas
Cavs: Yellow Alternate
Celtics: Christmas
Clippers: Blue Alternate, Christmas
Heat: Away, White Hot, Christmas
Knicks: Home, Away, Christmas
Lakers: Christmas
Nets: Home, Away, Christmas
Nuggets: Yellow Alternate, Christmas
Rockets: Christmas
Spurs: Grey Alternate
Thunder: Dark Blue Alternate, Christmas
Trail Blazers: Alternate
Some of those are made by me, some I took from 2K13 and some are converted from 2K13 from the works of following patchers:
iamLillard, Tha King, pinoy21, ShowBiz, qfrmcpt310
I'll update the pack if new alternate jerseys come along.
Update log
Dec 24: Updated with Tha King's Christmas uniforms
Jan 17: Added the new Blazers alternate