Being the dead anti-virus guy in a virus mad world does seem like a little more than coincidence. And like @movingman pointed out, perhaps they will now somehow use his product in a way which he would not have permitted, like Mullis and his PCR test.
Certainly it feels like a message to those of us who would dare speak out.
I hope the hollywood film which is no doubt on its way now will do him justice.
RE: John McAfee didn't kill himself