The ClamAV folks have
announced that they're going to EOL the 0.94 branch of ClamAV in favor of the 0.95 branch. They're doing this due to certain features in 0.95 which will allow them to distribute more complex signatures in an efficient manner.
I'm normally a rabid supporter of backporting fixes to older versions and keeping them alive forever, but in this instance, I think the ClamAV folks are doing the right thing. They're giving everyone plenty of notice, they're not being dishonest about why they're doing this, and it's certainly for a net gain.
The malware detection world is like an arms race, where the good guys are always a step behind. The real value ClamAV provides isn't in the detection software, it's in the malware signatures that the software processes. Anything that can give us better signatures and detect more malware is a good thing, even if it causes some temporary pain.