Is Daphne going to be a member of the Winx Club?

I hope not. Daphne is much older, wiser and stronger than the Winx. Plus, having seven members would be a bit too much in my opinion. (Which is why, even though she's one of my favorite characters, I don't think Roxy should be a member of the Winx) Plus she's going to be teaching history at Alfea. I doubt a teacher would run off with the girls on adventures and ruin her career, so I don't think she'll be a member.

No, Daphne is just hanging out with the winx club

I hope so!!! Or at least she travels and fights with them!!!!