If you havent already noticed, the Devs (secretly) updated the Notifications bar/page to a whole new level: there is a Post notifications tab (people mentioning you, upvoting, etc), and there is a New Airplanes tab (uploaded planes of people you follow). But they also added RED notifications. If your confused why there is red AND blue, heres a "Notifications key":

•Red=People mentioning you on FORUMS, and everything involved with forums
•Blue=people mentioning you on planes, if you won/lost a tournament match, and everything else
-Also uploaded planes of the people you follow

I hope this helps!