Blizzard has opened preorders for StarCraft II: Legacy of the Void, the second expansion to 2010's StarCraft II: Wings of Liberty. The add-on includes the single-player campaign follow-up to 2013's Heart of the Swarm, and pre-orders get immediate access to a set of prologue missions called Whispers of Oblivion which fill the gap between the two expansions. The new expansion tells the story of the Protoss' pursuit of (spoilers for a two-year-old expansion to a five-year-old game ahead) the malevolent Xel'Naga, Amon. Terran-turned-Zerg-turned-sorta-Terran-turned-uber-Zerg Sarah Kerrigan and fan favorite Jim Raynor are back, as well.
On the multi-player front, Legacy of the Void introduces a handful of new units, re-balances old ones, and adds Archon Mode, in which teammates share control over the same base and units. Pre-orders also get access to the Legacy of the Void multi-player beta. Blizzard continues to balance multi-player ahead of release, with the most recent adjustments coming alongside pre-orders. StarCraft II's multi-player has been a hit among both players and e-sports fans, and the latest changes are designed to get to the action quicker and reward fast micro-management decisions.
StarCraft II: Legacy of the Void is scheduled for a "winter 2015/2016" release, and a footnote on the game's pre-order page promises that the game won't arrive any later than March 2016. You'll be able to Marine rush, Baneling bomb and four-Gate to victory on both PC and Mac.