That’s the next economy version of the 700. Better than the 770 by all reports but still gimped a bit. The bolt handle is plastic, for example.
http://www.thetruthaboutguns.com/2013/01/foghorn/hands-on-with-remingtons-new-783-rifle/
I like! That looks a lot like Ruger’s new American the way the receiver is not an open top but just has an ejection port. That has got to be good and rigid.