When new Kali versions are released, won't it be cool if you didn't have to download and reload your current setup from scratch? Especially when a whole bunch of tool updates, a new kernel, and some cool new features are available.
Well, just run the commands below from your preferred terminal emulation, and you can update to the latest and greatest using these simple commands:
apt-get update
apt-get dist-upgrade
# If you've just updated your kernel, then:
reboot