Can't believe I slept so long on this show. When I heard that this was the final season of Breaking Bad, my wife and I went on BB binge and watched all five seasons this last week, and finally got caught up on the first two episodes of this season. Wish I would have gotten into this series earlier, but I do like the fact that I could watch the next episode anytime I wanted with no wait. This waiting a week between episodes is killing me.
And I finally got caught up on this entire thread.
My predictions (purely speculation / conjecture, or what I'dlike to see happen): The Neo-Nazis / Aryan Brotherhood (and by proxy, Lydia) make their move on Walt, intending to eliminate him. Hank is confronting Walt again, and has the bad luck (good luck for Walt) to be there as they move in. Hank defends Walt / saves Walt's life and allows him to escape, proving that despite what he said to Walt ("F... family"), family does mean something to him, but gets killed in the process.
Walt purchases the M60 to exact revenge.