“Today we’re officially releasing the Arma 3 Apex: Old Man open-world singleplayer scenario. This new scenario is free for everyone who owns the Arma 3 Apex expansion. In support of the release, Arma 3 and all of its downloadable content will also be on sale on Steam and the Bohemia Store with discounts of up to 70% between April 14-21.”
Source: N4G PC Arma 3 Apex: Old Man – Release Trailer