The "newer" versions aren't abandonware, they're freeware. They don't appear to have Quest For Glory I yet... The group is called
Anonymous Game Developers and they offer King's Quest I, King's Quest II and Quest For Glory II (in development) currently. The graphics are MUCH improved, but the game play and "boards/screens" are exactly the same as are the commands and options. They also have added speech packs to some (or all) of the games. Very cool!