More Episode 9 leaks(TROS). Look away if you don’t want any possible spoilers.
A wayfinder(which Kylo uses) leads to the sith fleet, which then leads to Palpatine.
The wayfinder does some odd things, like makes sand give way on Pasanaa.
The wayfinder device allows the first order to find the sith trooper fleet and then that fleet goes to bring Palpatine back.
Kylo thinks the sith troopers and the knights of ren will only answer to him.
It’s speculated for a long time that Kylo defects to the good guys side but never knew why, but speculates further, thinking the sith fleet going after Palpatine is the reason.
Kylo speaks to the oracle. The oracle comments on Kylo having affinity for Rey.
The Sith troopers were hidden away in the beyond(the unknown regions).
This is from bespinbulletin on instagram. He got all this info from Jason Ward(MakingStarWars) on Twitter.