Source: The Wrestling Observer Newsletter
As things stand right now, aside from the 30-man over-the-top Royal Rumble match itself, there are only two matches that have been officially announced for the 2015 WWE Royal Rumble pay-per-view, those being Brock Lesnar vs. John Cena vs. Seth Rollins for the WWE World Heavyweight Championship, and The Usos vs. The Miz & Damien Mizdow for the WWE Tag-Team Championship.
It appears that Nikki Bella vs. Natalya for the WWE Divas Championship will be added, and with the Rumble match itself being such a lengthy match, and one with so many competitors involved, there’s a good possibility that only one or two additional matches will end up being added to the card.
Matches such as Roman Reigns vs. Big Show and Ryback vs. Rusev were being pushed, however three of those four are announced as Rumble participants, and nothing can be officially booked for Ryback until WWE wraps up the “firing” angle from last week’s RAW.