Bob
I am not such a close looker as you, it took me a while to even find where it said Linux in that page, i would hope it would be the same foe everyone else.
Anyway most AV's work in all OS's, so most would look at the avast page anyway for a windows and apple mac version.
Even if not, we will get more linux users/support anyway, and more virus/Malware samples.
--lee