Google Currents is not the only Android app the company updated today as many first-party apps saw relatively minor updates through the Play Store this afternoon. Basically, the next time you check your app list be prepared to wait on those updates to download.
If you are one of the few still using a Google TV device, the PrimeTime and TV Search apps have been updated. PrimeTime comes with bugfixes and faster access to the channel guide. TV Search should be faster and less prone to crashes. On the phone side of things, Shopper has a shiny new UI and performance enhancements.