I can honestly tell that CS2D max will get bigger and better. The greatest news of all, there will be map transfer and also spray transfer.
There will be updated weapons, for example there will be the "Dual Elites" instead of the single "Elite" secondary pistol. The M4A1 will have silencer, so goes with the USP. The Shotgun will have 5 wide spread bullets when fired and the Glock and Famas will have a burst mode, it'll allow the weapons to shoot multiple widespread bullets when fired. New weapons... Tactical Shield which will prevent bullets from hitting either you or your teammates, I'd say it's pretty good if you want to defend your team. There will be some more new weapons like the Famas (FA-MAS), Galil (IDF-Defender).
Which weren't available in the earlier versions, but both weapons has been available in the CS2DG mod (Counter-Strike 2D: Gold).
Also there will be a new super weapon called the "Machete" it will be able to kill opponents in one hit. Just like the super weapon, laser. So when the machete has been added, there will be about three super weapons. The laser, the flamethrower and the machete.
I might have forgot some other great things, but yeah... there's too much good stuff in the new CS2D max! :)