Yes, I did receive a Windows key earlier today (I accidentally submitted my first application on the European site, and that one got picked for phase 3, so I reapplied as directed.) I imagine the purpose of sending out the keys early is to allow people to input them early, which may reduce the load on the registration servers. (The Windows keys in the email are only valid until the 30th, and after that, anyone who has not registered must reapply when beta starts.)
Only the people that indicated interest in the Windows version (or both versions) are getting keys. Those that marked both platforms get a Windows key with a notification that the PS3 key will be mailed at a later date. Those who only asked for PS3 keys, as opposed to Windows, just get an email telling them that a key will be coming soon.
Only the people that indicated interest in the Windows version (or both versions) are getting keys. Those that marked both platforms get a Windows key with a notification that the PS3 key will be mailed at a later date. Those who only asked for PS3 keys, as opposed to Windows, just get an email telling them that a key will be coming soon.
