This is unchanged from the upgrade program terms before. The phone is unlocked, but when you take delivery of the phone you have to activate it on a Big 3 carrier's postpaid plan.

So, the phones arrived locked? You can't use them with any carrier you want?

Phone is unlocked but you have to put in carrier info when you buy the phone. You have to activate a line from one of the big three carriers to use the program at all.