Was SSI's isometric RPG "M" ever released?

Saw this waaaay back in the day in a FASA/SSI ad booklet that came in my Mechwarrior 2 box:

Transcription:

What is M?

THE MOST VISUALLY STUNNING, TECHNOLOGICALLY ADVANCED, INTRICATE AND COMPELLING SCIENCE FANTASY ROLE-PLAYING ADVENTURE -- EVER.

• All-new game engine takes full advantage of powerful 16-bit computers for smooth animation and gameplay.
• State-of-the-art graphics accompanied by spectacular cinematic scenes.
• Smooth-scolling, full-screen isometric display with animated characters.
• True role-playing with the most advanced skill/character development and conversation system, animated phase combat and intense exploration and discovery.
• Create and lead a party of four characters plus one robot.
• Splendid music score and dramatic sound effects add excitement throughout the game.
• Point-and-clock interface for quick and easy play.
• CLUE BOOK available October 1993.

WHAT IS M?

PLAY IT AND FIND OUT.

This game is produced in cooperation with FASA Corporation. M is a trademark of Strategic Simulations, Inc.

So, what is M? Was it released? Any box art, reviews, screenshots, gameplay footage, etc?

I couldn't find anything obvious on Wikipedia's SSI games page in the 'M' section or Mobygames' DOS list.

"Menzoberranzan" (Wiki/Moby) is in the right-ish timeframe (1994 vs. 1993) but the wrong style (FPS vs. isometric).

And "M" is rather hard to Google for obvious reasons :)