What does The Green Hills of Stranglethorn reward?

The Green Hills of Stranglethorn gives Jungle Boots, Thick Armor Kit, Superior Healing Potion outright.

Where does The Green Hills of Stranglethorn start?

Barnil Stonepot in Stranglethorn Vale offers it.

The quest log lists it at level 40.

No. The quest exists in Classic Era as well.

World of Warcraft: Forever · quest · level 40

A level 40 quest in World of Warcraft: Forever, offered by Barnil Stonepot in Stranglethorn Vale. Recorded by 1 player running the addon.

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

Item	Given	Item level	Vendor sell
Jungle Boots	outright	40	31s 55c
Thick Armor Kit	outright	40	10s
Superior Healing Potion	outright	45	2s 50c

What does The Green Hills of Stranglethorn reward?: The Green Hills of Stranglethorn gives Jungle Boots, Thick Armor Kit, Superior Healing Potion outright.
Where does The Green Hills of Stranglethorn start?: Barnil Stonepot in Stranglethorn Vale offers it.
What level is The Green Hills of Stranglethorn?: The quest log lists it at level 40.
Is The Green Hills of Stranglethorn 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 · Stranglethorn Vale