Quick, honest review here - saw the film last night, it premieres tomorrow. Here's what I think:
Real Fans of the Furious franchise will absolutely love it, it delivers! If you're a fan, you know exactly what to do going into this feature, just sit back and enjoy the ride. It's a good one, enjoy! This movie is so very clearly made for the fans.
If you're not a furious fan, maybe haven't seen the ones before, don't watch this movie, go watch the other ones first and then see this movie, you'll have a more enjoyable time. If you don't like the previous films, you won't like this one.
P.S. - If you don't like this film because of the plot holes or bad acting or cheesy moments, then you are watching it wrong! :-)