Good old games had a big announcement today, which was expected to be Activision.
Their website is difficult (impossible perhaps) to access, due I expect to volume of traffic.
There was a certain amount of revelation to be found at this website:
http://news.cnet.com/8301-17938_105-10441275-1.html
It mentions Arcanum and Gabriel Knight as the first two games released ($5.99 each), with more to follow.
Hopefully this will lead to other major publishers!