Basically, if you like the idea of dungeons, monsters, complex puzzles and more monsters, then you should probably check it out.
“Creating a mere DLC or expansion to Grimrock simply wouldn’t have felt right,” said the developer in its latest blog post. “As today’s meeting proved, we still have a lot of ideas we’d like to explore, lots and lots of new content already done (originally made for a DLC/expansion), and a big engine update in the works. Simply put, a DLC would have limited too much what we can do. With a full-blown sequel, we can raise Grimrock to the next level.”
Apart from that, Almost Human is keeping tight-lipped on the project, but more details are expected to be announced in future blog posts.