1.) What are the main new things in this new Db3 version?
I'm basically taking every single aspect of the program and redesigning it to create a more self-consistent and flexible whole. I'm going to be tackling multibot physics, most of what has been talked about for the environment grid, sexual reproduction, antbots, etc. I'm also working hard on creating a more robust source code framework to build from, to minimize bugs.
2.) Will this new version be used in formula1 leagues? (If so I will eventually have to revise me "stay tuned" topic.)
Probably not the current leagues. The DNA alone is so strongly redesigned that no modern bot would work right.
3.) Will version 3 come with it's own installation file, the way version 2 did?
I haven't gotten that far, but I'm going to be spending alot of time making the user experience from installation to upgrading as easy as possible.
------------------------------------
And just in case you didn't pick up on it yet, so far all I've coded is about 60% of the DNA code. Don't expect a working version of the whole program for at least another year.