WWE will have the May PPV, Payback, on May 17, 2015.
Here is what appears to be the final card, with 8 matches (1 of them planned for the pre show).
WWE World Heavyweight Title
Seth Rollins (c) vs. Randy Orton vs. Roman Reigns vs. Dean Ambrose
WWE US Title Match
I Quit Match
John Cena (c) vs. Rusev
Sheamus vs. Dolph Ziggler
Neville vs. King Barrett
2 out of 3 Falls
WWE Tag Team Titles
New Day (c) vs. Tyson Kidd and Cesaro
Ryback vs. Bray Wyatt
Damien Man-dow & Axelmania vs. The Ascension
The Bella Twins vs. Naomi and Tamina Snuka
Tags: Payback, Payback 2015