If you want to know, see ... POLYGLOT!

If you really want to know what's going on in the adventure game industry, you can't do better than:

http://www.polymancerstudios.com/polyglot/

They do a free PDF newsletter every two weeks (look for the link for current issue) in which lots and lots of companies provide press releases, information sheets, and other data to tell each other, the retailers and wholesalers, and the consumers what the heck is going on.