I don't pay that much attention in general, but for Rock Band tracks, they come out on Tuesday for Xbox and then Thursday for PS3. Seems like that would be the same 'game add-on' type category as a map pack... I don't know too much about what limitations there are on releasing content to XBL, but a Tuesday sounds reasonable to me.Just noticed something odd; normally, game add-ons and such arrive on XBL and PSN on Thursdays. All three map packs for W@W came out on a Thursday. Yet March 30th is a Tuesday. Strange.
I don't know how XBox Live works, but the Playstation network gets large weekly content updates on Thursdays.