Their label RBW stated, "MAMAMOO's comeback project, which began last August with their unit songs performed during their solo concert, then continued with their pre-release single 'New York', has been completed. MAMAMOO will be releasing their 4th mini album 'Memory' on November 7, and will begin promotions from then on. It's an album that we've prepared with precision for a long time and we've added a story into it, so you'll be able to see MAMAMOO outside of their beagle image."
The title track for their 4th mini album will be called "Decalcomania". Can't wait!