Well, theres no exact way to know when the game will come out (as far as I know), but we can predict according to when LDW started working on the new game, and how long other games in the past have taken.
Also, the only game release that I was here for was VV3, and I think we got the name at 60 percent. At what percent did we get the names for other games like VV2 and Plant Tycoon? Maybe there are other cases where the name of the game has been released after 60%.
P.S. Please correct me if I made any mistakes.