The story about Brock's contract noticeably does not mention any length of the contract. (That was specifically mentioned when they revealed he'd be back last time this happened.) A short term deal to get him thru the Saudi Arabia deal still allows him plenty of time to go back to UFC.
Nous ne nous pouvons pas sortir. BROCK~! hasn't un-retired and reentered the USADA testing pool so he's 10 months or so away from being creamed by an elite heavyweight or steamrolling a kickboxer with no wrestling.
So him staying a bit longer isn't a huge surprise.
Cageside (cagesideseats.com) is running a rumor that Lesnar's contract was extended so he could drop the title to Reigns in front of a "more favorable" crowd. My guess is that they think Jeddah will be that favorable crowd. And they're probably right too.
In a coat of gold or a coat of red, a lion still has claws
And mine are long and sharp, my lord, as long and sharp as yours!