I heard TTX recently received or is receiving 1000 brand-new 60’ double plug door boxcars built by Greenbrier-Concarril. Number series is TBOX 661200-662199.
So far I have only found a single pic of one of the new cars, TBOX 661219
http://www.rrpicturearchives.net/showPicture.aspx?id=2673768