from: http://twitter.com/GearsViking (Executive Producer of the Gears of War franchise at Epic Games)
Next explosive XP event - "Tick, Tick, Boom!" Horde waves 1-9 all Tickers, wave 10 all Boomers and 8x XP. Event runs July 1st (Canada Day!), 9 AM EDT thru to July 6th, 9AM EDT to cover the holidays.
update
To answer some questions - XP applies to all modes, also Tickers 11-19 and Boomers on 20 (repeat) and it's 4x the now default double XP (2x4=8)
MovieMiguel.com
