At Comic Con Dan Slott (who is now writing the book twice monthly) said that it was one of several new possible suits. So no need for any panties to get twisted.
If there is a good reason behind a costume change i'll give it a chance.
From what I've heard is Peter is getting his "dream job" and will be making good money, so he'll be spending it on developing new spider-gadgets. This includes new suits and a possible return of "Impact-Webbing".
This is the 616 Spidey. They also have some concept art of him in an updated Fantastic Four outfit. Slott had said that he wants to give Spidey more tech, since Peter Parker is a science nerd.
I'm happy that Hobgoblin is back in comics, myself. His return has been long overdue!!