I haven’t watched the last episode of Breaking Bad, but I am pretty sure Water White did not die in the finale. The producers and script writers have two choices: one is letting Mr. White put up a good fight and kill all his enemies and died a heroic death. The rationale behind this ending is Mr. White has late stage cancer and he will die anyway. The second ending is Mr. White will kill all his enemies and walk into the setting sun as Heisenberg — with his tell-tale hat.
I think the second ending will be favored because if Mr. White is dead, there won’t be opportunities to produce a possible sequel and even a movie on this brilliant story again. The death of Heisenberg means the loss of commercial interests, so he will not definitively die in the denouement.
In all circumstances, Mr. White will join hands with Jessie and annihilate the new meth cooks in a violent way. After the revenge, he will reclaim his money and leave for good, leaving behind the suspense that he would come back one day in a sequel TV series.
The focus of the last episode will be his revenge with the gangs, reconciliation with Jessie, temporary reunion with his family, and most of all, the redemption of his name — he is still Heisenberg!