With the 64 bit update Incoming what are you hoping to see change? I am thinking we may get a graphic overhaul. I hope we can get larger worlds at last prehaps update some of the smaller EP/GP worlds ...
I do not think it is very likely that we will see any larger changes for the sims4 64-bit version. Not when sims4 (probably) does not have many years left. I think Get Famous and Strangerville have showed us how much more content we can expect added with each dlc. I think they are working now to finish their projects that they have worked on for a long time. Any larger projects or ideas will probably be reserved for a possible sequel.