First we had the new Netsky.X variant (matching nicely the Bagle.X found yesterday) - which talks nine different languages in the emails it send. Then a new Mimail variant (Mimail.V) was found, and we just got a report of a new Mydoom variant. This will be Mydoom.J.
Interestingly, this new Mydoom has code parts resembling the Bugbear variants...which might mean one of two things: Mydoom authors are recycling code from Bugbear - or both these viruses are done by the same author. The great Mydoom-Bugbear conspiracy!