It'll come to your attention sooner or later, but the newest release of Raspbian, Jessie, is finally available: https://www.raspberrypi.org/blog/raspbian-jessie-is-here/
Jessie is not just an iterative release, but is Raspbian built against the new major version of Debian. From the blog post:
To try out Jessie, if you're so inclined, you should grab yourself a new SD card, download the image from here: https://www.raspberrypi.org/downloads/raspbian/ and install it. This will leave you your Raspbian image to go back to ( or retrieve files from ) if you need to.
Help! X is broken in jessie!
I don't believe there will be any critical problems in the switch to Jessie, but those are famous last words. At time of writing I haven't tested any of our products/installers against the released version.
Jessie runs Kernel 4.1, which is basically the same Kernel as you'll get doing a "sudo apt-get update && sudo apt-get upgrade" on your old Raspbian install.
smbus always saying it's not installed...
You've probably already missed the bug, but there was a dodgy version of the python-smbus packages which would always fail to import in Python. You can fix it with:
sudo apt-get install --reinstall python-smbus python3-smbus