Take from Gunota:
GameSpot Japan has its own coverage of Operation Troy with some different screenshots. While much of the content is the same as in the recent Famitsu.com article, they include an introduction to some of the MS useable in multiplay and the armament for player classes (each shares a knife & pistol): Assault (assault rifle, grenade launcher, hand grenades), Sniper (sniper rifle, grenade launcher, hand grenades), and Anti-Tank/MS (rocket launcher, shotgun, smoke grenades, landmines).
Other details: The single play mode is referred to as a tutorial with 5 missions each for the Earth Fed and Zeon sides and standard levels of difficulty (Easy, Normal, Hard). A pair of screenshots show the ability to destroy an MS's main camera and it's mentioned MS are easier to damage from the rear than from the front side. Conquest Mode is said to have 5 capture points rather than 3. As well as the MS themselves, the MS weapons in multiplayer mode can be chosen before play begins. Apparently, only the RGM-79 and MS-06J are available to begin with and other MS, weapons, and color variations are gradually enabled as you play through multiplayer.
Edit: There's also the link to their gallery, which includes pics not shown in the main article. Another one is up at Online Player EX.