Thanks to Philip Fried for sending in the following:
This might as well confirm WWE's shift in direction for the coming years. The new WWE logo, used during WWE network advertisements last year, is clearly visible on the top right corner of the WrestleMania banner for WM 31. With the roll out of the WWE network early next year and a general change in focus, this might confirm that at least by 2015, WWE will have new branding.
This might also affect the WWE Championship design as it currently has the scratch logo but with the coming unification match, it's very likely that the new title will be adjusted with the new WWE logo.