Iīm curious about Jesseīs plan. He said that he figured out a "better way" to nail Mr. White (I love how he always calls him Mr. White). He seemed very confident, like he knew that Walt wouldn'tīt resist falling into his trap. I think one option is that they will make Walt come after him and set everything up to catch Walt. An alternative plan is that they will show their cards and reveal that Jesse has been working with Hank and that they have everything ready to arrest him. Either way, they think Walt will try something desperate.
I donīt know exactly why they said they don't have enough evidence to pursue Walt. Finding Leave of Grass allowed Hank to put everything together, and he said "so many things make sense to me now". They could use the equipment that was stolen from Walt's school, the book, the description of Heisenberg that they have, call records and Jesse's testimony to make a case.
I was also curious about what Jesse revealed to the DEA. Apparently he told them everything because now they know about Lydia and Vamonos! Pest.
A very significant detail is that in the future scenes, Walt appears alone. He's back to New Mexico for revenge, and I think his revenge is against Jesse. Probably Walt's family is destroyed and he blames Jesse for that. I don't think he could come after Hank for vengeance.