What happens to our iLevels?

[Veerne]

Not really, Heavensward requires certain story quests finished meaning their Ilvl wont be i50 itll be ~i90-100 minimum.

I honestly think ~55-57 is when our current gear will start becoming similiar/obsolete to dungeon/quest rewards.

But do those level 50 quests give enough gear with high enough item level? Of course Squeenix could always add proper gear rewards to them for the new players who hit 50 after the expansion is out.