I ordered a Series 2 watch when pre-orders went live and a Series 1 a few days later. I purchased AppleCare+ at the same time with both. I received my S1 on Sept 16 and have been using it. My S2 is scheduled for delivery this week. I received an e-mail from Apple saying my AppleCare+ has been registered on my S2 but received no such confirmation for my S1. I called support last night and they acknowledged that the AppleCare+ warranty registration for my S1 was never processed and they had to manually intervene to get it done. So this is just a PSA to ensure that if you purchased AppleCare+ to ensure that it is indeed registered properly against all of your devices. Cheers.