Just read the news that upgrading the distribution
sudo apt-get update && sudo apt-get upgrade
we have a new batch of updated packages, most notably support for new camera from the creators of the Raspberry Pi and available soon and new option in the raspi-config script.
There's also a kernel updated. The easiest way we have is running the Hexxeh's script. Instructions for installing and upgrading the kernel as follows:
sudo apt-get install git-core sudo wget http://goo.gl/1BOfJ -O /usr/bin/rpi-update && sudo chmod +x /usr/bin/rpi-update sudo rpi-update