No.

In terms level, it took me to level 100 before I was finished with it — so when you wrap up you'll be ready to jump right into the Broken Isles. In terms of time, it will take few hours if you're a leisurely sort of player like I was.

Fortunately, your new Demon Hunter will only have two talents — level 99 and level 100 tiers — so you'll only have a couple of choices, depending on your specialization (Havoc or Vengeance).

Since you're going to have to have at least a level 70 character on any realm you roll a Demon Hunter, and they're an unparalleled mobility class, I'd suggest going double-gathering and feeding the mats to your other characters to craft things.

Artifact Knowledge is a hidden currency gained by researching it in your Class Order Hall. You get the quest at level 110, and collecting Artifact Knowledge will help you speedily get your off-spec Artifacts maxxed out. Artifact Knowledge increases how much Artifact Power you get from any items that grant it, and each level of Artifact Knowledge gives you a percentage-based modifier to your Artifact Power.

The new wardrobe is part of the Collections screen.

World quests are the new model for max level questing.

Relics are items which are socketed into your Artifact, similar to how gems from Jewelcrafting function.

PVP Talents (or "Honor Talents") unlock at level 110.

Many cosmetic glyphs are still made by players with Inscription and can be bought and sold on the auction house.