AVG Free edition 2013 is now available as of yesterday. You can search for it yourself or click here to download from download.com where all links direct you to anyway.
It is still free and doesn’t include the firewall, although you can either use your built in Windows firewall or download another free firewall like ZoneAlarm which works great. It’s very different looking, but if you take the time to read the menu options, you can probably figure out where everything is that you were used to in the previous version without too much trouble.
As with any software upgrades, there are several improvements to how to searches for viruses as opposed to simply getting new virus definition updates. These are two different things. Definition updates are daily, program updates are annual, unless minor patches come out throughout the year.