Personally I'm kinda into the new icon and logo. The colors aren't really doing it for me and the app design feels unfinished. The hierarchy on the home screen feels especially off. What exactly does foursquare want me to do on this screen? Everything seems to have the same visual weight.
The feel I get from the new apps is: Swarm: Where my friends at? Foursquare: Kinda like yelp.