I have done:
-classes:
Pyro (flamethrower, pistol, axe)
Engineer (shotgun, pistol, wrench - to build turrets in future )
Sniper (sniper rifle, smg, machete)
Spy (Revolver, knife, and working on invisiblity and disguise)
Heavy (minigun, shotgun, fist)
Demoman (2 grenade launchers (each another type), pistol, bottle)
Medic (syringe gun, pistol, healing gun, bonesaw)
Scout (shotgun, pistol, baseball bat)
Soldier (rocket launcher, pistol, shovel)
-every class from 9 classes has another melee weapon
-new splash system (there are 2 main menu splashes)
-weapons
-gamemode - teamplay, deathmatch, sudden death
-working on flags, capture points, intelligents
-voice
-intro
-music
and many more...
To more infro, please visit http://www.fpsbanana.com/games/1796 and see screenshots too.