[Graystripe2000]

MercurySteam, the studio known for American McGee's Scrapland and the Castlevania: Lords of Shadow trilogy, has updated their website with a countdown to their next game.
https://www.mercurysteam.com
Previously, the site just showed a man in a spaceship with the following text:
"Exploring new worlds, fighting strange creatures, discovering new heroes. Expect news soon."
Also, today, they revealed a piece of concept art for this new game on their Facebook.
https://www.facebook.com/mercurysteamsl/photos/a.1137546046257212.1073741828.1132660160079134/1143030619042088/?type=3&theater
UPDATE: Dave Cox has confirmed he is working on the game. http://gematsu.com/2016/03/dave-cox-working-mercurysteam-new-project-announced-april

[Randomizer]

Hoo boy

I'm ready for another disappointment again

I sure hope they revert back to the classic or metroidvania-style of gameplay again after this trilogy

[Graystripe2000]

Hoo boy

I'm ready for another disappointment again

I sure hope they revert back to the classic or metroidvania-style of gameplay again after this trilogy

This is not a Castlevania game. This is something new, it looks like.

[Randomizer]

This is not a Castlevania game. This is something new, it looks like.

Hmm...

It seem like I overlooked into things

Oh well, carry on then

I'm watching you, Lords of Shadow

[Questklonoa]

Hmm... looks like something interesting to look out for.

[Graystripe2000]

So, IGN has found that the file name for a piece of concept art is "Mecha Inside", which caused them to think this could be a mech game.
http://www.ign.com/articles/2016/03/18/castlevania-lords-of-shadow-developers-announce-mysterious-new-game
However, I found their Instagram, which has a piece of concept art for the game that may suggest that you'll be able to get inside a mech and control it. And, yes, this appears to be of the same character in the mech concept art.
https://www.instagram.com/p/BC0grgnD1L5/?taken-by=mercurysteam_entertainment

[Graystripe2000]

More concept art. https://www.facebook.com/mercurysteamsl/photos/a.1137546046257212.1073741828.1132660160079134/1147246018620548/?type=3

[Graystripe2000]

A trademark was filed by MercurySteam for "Raiders of the Broken Planet". http://anony.ws/i/2016/04/06/Raiders-of-the-Broken-Planet.jpg

[Graystripe2000]

Game's announced. Press release and assets are here. http://www.allgamesdelta.net/2016/04/mercurysteam-announces-raiders-of.html