And what was that about Skywalker at the end almost like it was thrown in there just to make it sound like ROTJ. I didn't get that. Hope i'm not throwing any spoilers out there.
Yoda was seeing (albeit clouded) events in the future - Order 66, Sidious cutting down Mace and Co. in his office and finally, he saw his own death.
"Through the Force, things you will see. Other places. The future... the past. Old friends long gone." - Yoda, TESB