I actually gasped out loud when
bombdigitiI really don't know about Walt dying from cancer, since they still have to cover that foreshadowing from earlier in these episodes with Walt having hair and the M60 in the trunk. If they show something like that in this episode on Sunday then I could maybe see it in the last one. Like he's skipping chemo to just let his sins die and let the cancer win. Who knows.
He's skipping chemo because he's on the run. And he made it pretty clear that he didn't think he wouldn live longer than a few months with the treatment anyways. I think White's focus is just making amends now aka getting his $80 M back.