Oda's famous clash just for hype. I expect Dragon to travel via wind and pop up next chapter
I saw someone predict Akainu vs Dragon clash in chapter 1100, exactly 1000 chapters after Dragon first showed up in chapter 100. Looks likely to me.
From the small amount of spoilers we got the power levels mostly as expected
Luffy Gear 5 > Admiral Kizaru > Luffy Gear 4 ≈ YC1 Katakuri => Shichibukai Doflamingo > YC3 Cracker
* Doflamingo was already badly injured by Law, emotionally hurt due to his nakamas and country being killed and raided + worry of having to deal with CP0, marine admirals, WG and so on