According to Gamepro, Mortal Kombat Arcade Kollection's official release date will be August 30th for Play Station Network and August 31, 2011 for Xbox Live Arcade and PC.
Here's some text from MKSecretsEdit
"MORTAL KOMBAT ARCADE KOLLECTION TAKES GAMERS BACK TO THE ARCADES Iconic Arcade Games Will be Available on PSN, XBLA, and on Windows PC
Burbank, Calif. – May 12, 2011 – Warner Bros. Interactive Entertainment today announces Mortal Kombat Arcade Kollection for PlayStation®Network, Xbox LIVE® Arcade for the Xbox 360® video game and entertainment system from Microsoft, and Windows PC. For the first time ever, the original Mortal Kombat arcade trilogy - Mortal Kombat, Mortal Kombat 2 and Ultimate Mortal Kombat 3 - have been brought together into a single collection which will be available for download at August 31st.“We are very excited to finally have the first three Mortal Kombat games available in one download package for long-time and new fans to play,” said Ed Boon, Creative Director, NetherRealm Studios. “With the release of our 2011 Mortal Kombat, and its return to 2D game play, players have been asking for these classic titles and we are happy to deliver them.”
Developed by Other Ocean in conjunction with NetherRealm studios, the Mortal Kombat Arcade Kollection will offer fans the chance to play through the games in their original arcade state and rediscover all their favorite characters, fatalities and environments as well as relive some of the franchise’s most memorable secrets. In addition, this new collection will feature online play, leaderboards, achievements and trophies.
An arcade-perfect port, the Mortal Kombat Arcade Kollection brings players their favorite Mortal Kombat arcade classics for $9.99 on PlayStation Network or 800 Microsoft Points, to put it in arcade terms - 40 quarters ($10.00).
To help players create an arcade experience at home, GameStop will exclusively offer a limited run of the new Mortal Kombat™ Klassic Fight Sticks designed and manufactured by Performance Designed Products (“PDP”), creators of the sold-out Mortal Kombat Tournament Edition Fight Sticks, bundled with a code to download Mortal Kombat Arcade Kollection. Both the PlayStation 3 and Xbox 360 versions of the Mortal Kombat™ Klassic Fight Sticks are available for pre-order now for $129.99 at GameStop."
- It has been noted that an add-on of Mortal Kombat 4 will soon be released also as an arcade "perfect" port. More details are yet to be revealed by NetherRealm Studios, Warner Bros. and Ed Boon.