I ordered 10 non windowed in dec and haven't heard anything yet. Also have 10 from brownells that I've gotten an email on saying they're still on backorder.
Well here is my chance to post this in the right thread haha. This is an arf.com thread for people who bought the holiday mag packs. People are listing when they bought them, when they were shipped and when they got them. It allows you to estimate when you can expect them. http://www.ar15.com/forums/t_2_268/229600_DSG_Pmag_SHIPPED_thread.html
That kind of surprises me. I figured they would focus efforts to make as many as possible as quickly as possible and just do windowless. Not conplaining though. Can't wait till they get here.