So, as for the latest chapter
Spoiler: Chapter 1047 scanlation
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I like that Kaido gets some solid blows in on Luffy here, now that he's no longer caught off guard by his awakening, and emphasizes how Luffy won't just be able to rely on his new DF powers to win. I doubt the actual fight won't be won by the sudden shonen power-up, but at least Oda's trying to indicate that a power-up alone doesn't make a pirate king: it's will.
Also, further proof that Roger was DF-less. Don't think we had direct confirmation of that thus far.