Well, this is a bit scary, I must admit it, because the last time Zynga changed the costs of purchasing expansions in CityVille, it wasn’t for the good of the players and probably it won’t be made easier now either. However, at the moment, all that Zynga said is that they’re actually going to change how expansions purchases work in the game:
“The Government has passed new laws on expansions. Check it out now!”
And that’s about it, since we can’t check anything out just yet since the feature hasn’t been released. Either way, it would probably be safest to purchase a few extra expansions for your city if you have the required funds and items because you can never know what might come in the future. Better be safe than sorry!