What does Vorrel's Revenge reward?

Vorrel's Revenge gives Vorrel's Boots outright, a choice of Mantle of Woe, Grimsteel Cape, 3,399 experience.

Where does Vorrel's Revenge start?

It was picked up in Hillsbrad Foothills.

The quest log lists it at level 33.

No. The quest exists in Classic Era as well.

World of Warcraft: Forever · quest · level 33

A level 33 quest in World of Warcraft: Forever in Hillsbrad Foothills and turned in to Monika Sengutz. Recorded by 6 players running the addon.

Giver shows once a player with the addon opens the quest.

Item	Given	Item level	Vendor sell
Vorrel's Boots	outright	30	16s 14c
Mantle of Woe	as a choice	33	17s 12c
Grimsteel Cape	as a choice	33	27s 48c

What does Vorrel's Revenge reward?: Vorrel's Revenge gives Vorrel's Boots outright, a choice of Mantle of Woe, Grimsteel Cape, 3,399 experience.
Where does Vorrel's Revenge start?: It was picked up in Hillsbrad Foothills.
What level is Vorrel's Revenge?: The quest log lists it at level 33.
Is Vorrel's Revenge new in WoW Forever?: No. The quest exists in Classic Era as well.

What sells at this level, and what to keep from these rewards, is in the level 30 to 40 gold guide.

Source: what players running the addon saw in the quest windows; the quest text itself stays in the game. Every quest seen · Hillsbrad Foothills