I see the Atlas Summer 2013 All Scales Summer Catalog (that really covers all the way through December) is here, although in an attempt to confuse us Atlas puts it under the "Spring/Summer 2011" text. A few observations are that is it a little weak in locomotive releases, only the F3s that are due at the end of the year are mentioned in O Scale, and the only new model of O Scale freight car this year is the recently announced 25K Gal. modern tank car.
One interesting item, although not directly associated with O Scale, is in the Atlas HO catalog they list a HO Trainman 40' boxcar shake-the-box kit; looks like they're going "Old School" with this one. Maybe they are trying to gauge a feel how easy to assemble kits will be received now that we've been spoiled with mostly pre-assembled cars the past decade. I guess with MSRP prices for the newly announced Atlas Master O Scale 25K Gal. tank cars flirting with the $100 mark, they might want to find some way to bring down costs where they can. Also, this may be a little experiment to see if alternate manufacturing locations can be utilized down the road, e.g. maybe thinking to bring back some limited manufacturing to the USA like Lionel to get better control of their destiny, since the original reason for moving all the manufacturing overseas was the accessibility of cheap labor to meet the ever-increasing demand for pre-assembled cars. However, that cheap labor isn't quite so cheap and that cheap overseas shipping isn't quite so cheap anymore either. And, as of late, we might now be more inclined to row-our-own on a few cars since our salaries don't seem to be keeping pace with the rising cost of all these new pieces of rolling stock we want 
. I just assembled one of the new Atlas O Trainman Undec. bulkhead flatcar (which was essentially a shake-the-box kit, although I didn't really think it was discounted to an equivalent shake-the-box price - I guess I underestimate the value the Chinese really do add by screwing on the trucks and snapping in the couplers <note sarcasm>
and it went together very nicely and I got to add some extra detail that was not on the assembled model to boot. Hopefully this weekend she'll go into the paint booth.
http://www.atlaso.com/catrequest/order_cat.htm
Enjoy!
Scott
