The current plan is for the 30-man Royal Rumble match to end with a disputed or controversial finish, coming down to Roman Reigns and Brock Lesnar. If they go with this plan, WWE would do Lesnar vs. Reigns at Fastlane to determine the WWE World Heavyweight Champion.
If it turns out The Rock can wrestle at Wrestlemania 32 (something we’ll be discussing more about later this week), the plan is still Reigns vs. Triple H at the show in Arlington, except in that scenario, The Rock would be in Roman's corner and Vince McMahon would be in Triple H’s corner.
Please be advised these plans are preliminary and are subject to change but we can CONFIRM this was the plan as of the middle of this week.