This is the new alpha, it does not contain map12 but it is big enough to consider calling it 2.0.0, Here, in the description is the Changelog.
New Weapon, The Sniper Rifle
Removed the Magnum
Changes in all maps
Secondary attacks in the pistol, Rocket Launcher and the Shotgun (The pistol have a knife attack)
Bugs fixed
New HUD
New Menu logo and new Titlemap