Thanks to the TV listing service Zap2it we have two more episode titles and descriptions for the final half of Star Wars Rebels Season 4.
12: “Wolves and a Door”
SEASON 4, EPISODE 12
AIRING MAR 10, 2018
“Ezra and the Ghost crew learn the Empire has plans for the Jedi Temple on Lothal.”
Now it could be nothing but the fact that the Jedi Temple on Lothal is mentioned along with Ezra and Kanan is not mentioned makes me suspicious because of the titles for episodes 10 & 11 which are “Jedi Night” and “Dume.”
The title means we will be seeing the wolves again and the second part of the title most likely means the door to the Jedi Temple. Of course it does make me wonder about the one big “door” we have seen and that is the door Ahsoka passed through in the Sith Temple after her duel with Vader.
13: “A World Between Worlds”
SEASON 4, EPISODE 13
AIRING MAR 17, 2018
“While the other rebels engage the Imperial forces outside the Jedi temple, Ezra gains access inside and experiences a revelation.”