Grisoft has made AVG Anti-Virus Free 7.5 available for download. The commercial version was released a few weeks before.
From Grisoft:
New in AVG 7.5
- Improved virus detection based on better heuristics and NTFS data streams scanning
- Smaller installation and update files
- Improved user interface
- Windows Vista ready
- and more
Get it at http://free.grisoft.com/