This week, Paul Heyman gave an interview to TVInsider, where he also talked about Brock Lesnar’s new contract:
“I think you’re already surprised to see Lesnar a couple of times in May. But you haven’t seen anything yet, Brock will now let you know the title he will focus on. I think you will see Lesnar again in 2019 much more than you saw it in 2018 “.
So according to Heyman’s words, Brock Lesnar would have signed a new contract with WWE with many more appearances than the previous one.