I also heard that Sean Hayes the guy who played Jack on Will & Grace is an executive producer of Grimm.
I just don't care for Nick and Juliette to get back together I've been on many internet boards and the public hates Juliette. I don't think the audience is going to believe it even if the writers try to get them back together.
Nick has so much more chemistry with Hank and Munroe, but I doubt Grimm would make these characters bisexual. It would be interesting though, if the writers went in that direction. Nick doesn't seem very interested in women at all he seems more interested in his Grimm work and hanging out with Hank and Munroe.
Juliette is a distraction she needs to be killed off ASAP.