'Bleach 677' spoilers: Ichigo to undergo full development? Is the series entering its final arc?

Followers of Tite Kubo's manga series "Bleach" would be happy to know that "Bleach 677" spoilers seem to allude to the fact that Ichigo's character would finally undergo full development. However, will this signal the beginning of "Bleach's" final arc?
Possibilities and assumptions surround the supposed full development of Ichigo's character, one of which is that Kubo is merely teasing the fans or that indeed, "Bleach" is entering its final arc. If there's one thing that's certain about all these, it is that the hype for "Bleach 677" is at its highest.
Those who have read "Bleach 676" might recall that it was then Ichigo turned into a Hollow. More than that, when he used his Getsuga Tensho alongside the Cero power in 676, he was able to bring out Gran Rey Cero. Readers of the manga have long anticipated that once Ichigo is able to harness the power of Gran Rey Cero, he would annihilate Yhwach.
This development is what The Bitbag reported could be the catalyst for another intriguing chapter; particularly one where the real fight would begin. "Bleach 677" spoilers insinuate that Ichigo would be able to defeat Yhwach once and for all by launching a fatal attack on him.
Fans have differing reactions about the fight that transpired between Ichigo and Yhwach in "Bleach 676," with some observing that the latter seemingly wasn't taking Ichigo seriously in their fight. Users of the forum Manga Helpers even noted that Yhwach looked as if he were merely anticipating what would happen next and was more entertained watching the fight than being in it.
At any rate, fans are hoping that Yhwach would finally meet his end in "Bleach 677." Whether the Gran Rey Cero helps Ichigo defeat Yhwach remains to be known, but he might surely come out of the fight without a scratch.