The publisher announced the event on The Source, which will begin in March's War of the Green Lanterns #1 and will continue across the Green Lantern titles into May.
"From Rebirth to Sinestro Corps to Blackest Night, Hal Jordan, Guy Gardner, John Stewart and Kyle Rayner have stood by each other and fought together to save our universe," said DC. "After all that, what could possibly tear them apart?
"We’ll find out in 'War of the Green Lanterns'... Every Green Lantern is about to be tested - and tested against one another."
The run-up to the storyline will begin in February's Green Lantern #63 and Green Lantern: Emerald Warriors #7.