I've been looking at this topic about Season 3 DVD for a bit now, but, to be honest, I cannot think CN will bother realising it. All the seasons are on iTunes in the US anyway.
Also today, I was poking around Craig (McKraken's) deviantART page today for the first time in a long time and he says:
"
The DVD releases are not up to me but Cartoon Network. But as far as Foster's Season 3 goes I don't think it will ever come out. Years ago we designed all the packaging for it but then it got pulled off their release schedule for some reason. They never told me.
I doubt there will be any more Foster's releases as the show is off CN's radar now. The best luck you might have getting the rest of the seasons is iTunes.
Sorry I couldn't have been more helpful, I wanted it to come out too."
