Micro-Trains has announced their new releases for January 2012. 

N scale models include:

Heavyweight coach, UP yellow
Heavyweight coach, CP maroon
50′ box PD, PRR sk tuscan
TOFC flat, BNSF brown
90-ton hopper, NP black (2 numbers)
40′ steel ice reefer, Raskin Packing Co
40′ box PD, POTUS 40
33′ offset twin hopper, GN fgt car red (reprint)
50′ box PD, MILW brown/yellow stripe (reprint)
50′ flat, RBB&B Circus red (2 numbers)
40′ box DSD, runner pack, CN fgt car red w/green doors
48′ trailer, B&O aluminum
48′ trailer, CR Mercury white (reprint)

Full Micro-News PDF can be viewed HERE (2.1MB).