iOS 8.3 beta now on Apple Seed, appears to be invitation only
Apple has started sending out email invitations to some members of the Apple Seed program, inviting them to beta test iOS 8.3.
Based on the contents of the email — some of us here received it — it looks like Apple is not doing a full-on public beta like they did for OS X Yosemite, but are instead inviting a subset of Apple Seed members to participate in the iOS 8.3 beta. In other words, not every Apple Seed member appears to be getting invited, so you shouldn't join Apple Seed expecting to get an iOS 8.3 invitation.
Full story from the iMore Blog...