There will be another new update soon. It is a bit more extensive than the previous, and includes multiple map updates as well as weapon and player skin updates and additions.
There is another development that will excite longtime fans of the game, and that is a remake of the classic map "The Saucer". This map has been remade twice before, and will combine some elements of all three versions, as well as extend itself in new ways. This map is using some different methods, that point to the future of Alien Arena and will also feature some modular pieces for map makers to use for their own creations.
Speaking of maps, another map pack will be coming shortly as well!