There is speculation going around the WWE right now that at SummerSlam there will be a three way match to determine the #1 contender for the Raw tag team titles. The match is said to feature The Hardys, The Revival and Luke Gallows & Karl Anderson.
As for the WWE Raw tag team titles, the speculation is that Cesaro & Sheamus will almost surely be defending the titles against Seth Rollins and Dean Ambrose. There is also speculation that following the match, we will see a full fledged reunion between Ambrose and Rollins.