Had the same issue with gsmnation, was signed up for preorder notice and got an email today saying it was ready for payment but the item in the cart is the C6502(ZL) and not C6602(Z). I sent then a message asking them to confirm whats going on so we shall see what happens. Been a struggle to find any place that even lists the C6602 as existing for preorder let alone purchase.
Sony Xperia Acro S - Rooted (Current)
HTC myTouch 4G Slide - Rooted w/Virtuous Infinity Expresso Decaf (Backup)
HTC G2 - Rooted w/CM7/OC1497 (Sold)
HTC myTouch Slide Black - Rooted w/Blackslide 1.2/OC806 (Sold)
HTC G1 White - Rooted w/CM6.0 (Sold)
Sony Ericsson W580i (Sold)
Sony Ericsson Z520a (Sold)