Separate exclusivity contracts with one carrier in each country?
---------- Post added at 07:31 AM ---------- Previous post was at 07:30 AM ----------
My unblock request with AT&T was denied.
Also remember, the first anticipated release date was what...March 19th. Assume the exclusive window was open at that time. My guess the exclusive part ends near the end of April. That does NOT mean you will see T-Mobile devices then. But there are very strong rumors about 'other' US carriers in the late May/June timeframe. This should give you a hint about the exclusive window timing.
Of all the dates floating around, dates for next week appear the most. However, as you copied and pasted, do NOT expect AT&T to all of a sudden start issuing unlock codes. Most likely you will see external parties, like unlocker.com, etc, to start generating codes, at a higher $$ for a while.
This is not really unusual, as you pointed out. Because more people want the phone, does not mean AT&T is being any more or less weird than it usually is.