Maplestory producer E3 interview with Crstyn Cox

so
Part 1 Aran, Evan and DB revamp
Part 2 Crafting System
Part 3 Pvp and Future henesys
Part 4 Ice Knight
Part 5 Masteria update;P?

I think it most likely will go:
1 - Class Revamp
2 - Crafting
3 - Future
4 - PvP
5 - ???

Because while, yes, the Ice Knight update was delayed for KMS, they also got Future Henesys/Ereve with the Crafting System (as opposed to PvP as you listed).

Ice Knight isn't a big enough addition to warrant a whole section to itself, as others have noted.
Makes more sense to break up Crafting and Future since they're both pretty huge additions.