What does Researching the Corruption reward?

Researching the Corruption gives a choice of Beetle Clasps, Prelacy Cape, 35s, 2,400 experience.

Where does Researching the Corruption start?

Gershala Nightwhisper in Darkshore offers it.

Its level has not been recorded yet; it shows once a player accepts it with the addon running.

No. The quest exists in Classic Era as well.

World of Warcraft: Forever · quest

A quest in World of Warcraft: Forever, offered by Gershala Nightwhisper in Darkshore. Recorded by 1 player running the addon.

Level and objectives show once a player with the addon accepts the quest.

Item	Given	Item level	Vendor sell
Beetle Clasps	as a choice	27	9s 81c
Prelacy Cape	as a choice	27	9s 84c

What does Researching the Corruption reward?: Researching the Corruption gives a choice of Beetle Clasps, Prelacy Cape, 35s, 2,400 experience.
Where does Researching the Corruption start?: Gershala Nightwhisper in Darkshore offers it.
What level is Researching the Corruption?: Its level has not been recorded yet; it shows once a player accepts it with the addon running.
Is Researching the Corruption new in WoW Forever?: No. The quest exists in Classic Era as well.

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