No not at this time. There was a chat Last month with Aaron on #spaceempires and the log is over at
www.spaceempires.net where Aaron mentioned some things.
I don't know what is in the game, but if SEIV is an indication, then I will bet we will see a lot of the suggestions listed here, and on the yahoo Groups in SE V. The two biggies are ground combat and hero's.
Aaron said that ground combat is something that will most likely be the same as in SEIV, but who knows. You'll have to read the chat. The same thing for Hero's. Albeit, I think my suggestion for Hero's was the best.
Any ways, there is no list as to what will or will not be in SE V that I am aware of. And I would not bother Aaron with one just yet. I am sure as the game gets close to Demo, a list will be published.