Post-metal band Russian Circles have recently entered the studio to record what will be their fourth full-length studio album.

Speaking recently with GuitarWorld.com, Russian Circles guitarist Mike Sullivan revealed that the Chicago three-piece were in the studio working on the follow-up to 2009's Geneva. The album is set for an October release through Sargent House.

When asked if fans could expect any surprises from the new album, Sullivan had this to say: "I don't want to get too into it, but there are definitely things that are new to us, that we didn't really put thought into but just started happening in the writing process."

"We were more adventurous with our tones," he added. "It's a broader spectrum of tones."