User blog comment:Paul.rea/Teen Wolf Wikia LIVE at San Diego Comic Con 2015/@comment-6383956-20150712043004/@comment-4091815-20150712064635

My sense from all that, given the time I've had to digest since the press event, is that everything he was saying about packs comes down to trust.

Does the beta trust the Alpha to make the right decisions (or with their lives) and does the Alpha trust the beta. Scott is very trusting but he always had his doubts about the twins.

Derek and Scott got to a place of mutual respect and mutual aid which, I think, would qualify him as pack.

Yes Stiles and Lydia are in (Allison was in)- pack doesn't mean just creatures. That is long-established canon as Derek said in Season 2.

The long-distance pack thing is still questionable I guess but I'm pretty sure, after a bit of growling and sniffing, long-lost pack members are welcomed back to their old status.