-- As noted before, the plan as of now is for Roman Reigns to once again challenge Brock Lesnar for the WWE Universal title at SummerSlam, mainly due to the controversy that ensued at the Greatest Royal Rumble.
-- However, Vince McMahon can and often does change his mind at any time or even at the last minute and this is going to be even more prevalent in the future because WWE booking these days is very different from years past. The reason for this is that creative direction of characters, and things such as who is champion and who isn't, means less to the business bottom line. With the gigantic TV deal about to fall into their laps, this isn't about to change.
Source: Wrestling Observer Newsletter. Subscription information & prices available at f4wonline.com