Legend of Grimrock - Sequel Announced

The team behind Legend of Grimrock has announced that they're making a sequel to the
first game called - Legend of Grimrock 2. 

Here's a bit from the announcement on their website:

Secondly, and this is a biggie (probably more to ourselves than you!), we are now officially working on... Legend of Grimrock 2! Creating a mere DLC or expansion to Grimrock simply would not have felt right. 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today's meeting proved, we still have a lot of ideas we'd like to explore, lots and lots of new content already done (originally made for a DLC/expansion) and a big engine update in the works.

Thanks RPGCodex :)