My thinking is that it is going to kinda go the way of Angel and Husk. That went away and was never spoken of again. I didn’t like the couple, but I know of a few who actually did. I don’t think Strain’s tweets count as canon.
Granted, if Excalibur does turn out to be UK based, I will most certainly think that Jono not being on the team is an odd choice. I think I prefer Jono and Jubilee as BFF as opposed to dating.
@Jawbreaker: Yeah, I thought it was weird that Nightcrawler wasn’t in the book either.