Over on the official message boards for Civilization V, there's a partial patch listing posted with loads of updates planned for the game.
Looking it over, players will notice some planned user interface and gameplay changes, along with some multiplayer and AI fixes. There's also the usual bug killers and updates.
More additions and fixes are planned, as it's just a partial list at the moment, but it should give you an idea of what to expect in the near future - which could come as early as next week.
Read up on all the planned changes here. It's rather large, so go grab a cuppa for liquid sustenance beforehand.