I tried one Best Buy in NYC last night, and though they had the Rocksmith bundle, they couldn't fulfill the deal because they interpreted the ad to say that you had to buy the guitar and game separately. YMMV, depending on the store, but I'd double check that your Best Buy has a musical...
They've brought back the ad for the free premium theme for The Dark Knight Returns, but it's still the regular picture pack. Can we get resolution from MS on whether this premium theme even exists and whether they intended to actually offer that one for download for the current Batman...