The purists amongst you might be curious to learn precisely which versions of LucasArts' classic adventure games are making their way to Steam this Wednesday ... after all, LOOM was released in both a 16-color EGA floppy disk version, as well as a 256-color CD-ROM version with full voiceover (so-called "talkie" support); Indiana Jones and the Fate of Atlantis was released on both floppy disk and then CD-ROM a year later; and Indiana Jones and the Last Crusade: The Graphic Adventure was released on both floppy and CD as well ...
... but the Steam version of The Last Crusade isn't the CD-ROM version that was released in 1992! LucasArts tells us that the version of The Last Crusade that will be put on Steam is a "previously unreleased version" with "even more bugfixes" than the original CD-ROM re-release, along with a "Tandy 1000 sound engine." As for LOOM and Atlantis, you'll be seeing the CD-ROM "talkie" versions for both on Steam.
The Dig was CD-ROM only, and the other six titles being released on Wednesday only had one version. The Secret of Monkey Island: Special Edition is a special case – the remastered version is obviously new, but you can switch back and forth between the "Special Edition" and the original. That "original" release is in fact the CD-ROM version of the game, not the floppy disk version, in case you were wondering.
Also of note: the copy protection system for both LOOM and The Last Crusade was to include an add-in – the "Book of Patterns" and "Grail Diary" respectively – that would have to be referenced while playing the game (take that, pirates!). LucasArts tells us they'll have PDF versions of both, so fret not, Adventure Gamer. It's your week!