Raw and Smackdown rosters will be jumbled up a bit.
During Raw, WWE announced the next Superstar Shakeup for next week and it will take place on both Raw and Smackdown between April 16 and 17. The shakeup is different from a draft because it revolves around talent exchanges instead of an entire overhaul of the rosters. The last Superstar Shakeup was a year ago.
Even though the brands will be independent on the weekly shows, WWE has moved towards co-branded pay-per-views starting with the next event WWE Backlash, per WWE. Technically the brands will also be performing together later this month when the company heads to Saudi Arabia for The Greatest Royal Rumble.
The last Superstar Shakeup saw two champions change brands and Sami Zayn follow Kevin Owens to Smackdown as they were feuding at the time. On Raw, announcers mentioned that Alexa Bliss and Mickie James were both campaigning to switch brands after problems with Nia Jax.