Harmonix is teasing a new game announcement for Monday, May 5.

#8220Looks like we might have an announcement to make on Monday at @Harmonix,#8221 Harmonx director of marketing John Drake said on Twitter. #8220Been in the works for a while #8211 psyched to share it with you guys.#8221

He added, #8220And no it#8217s not a new @RockBand or a new @Dance_Central, before you ask.#8221

Harmonx is currently developing Fantasia: Music Evolved for Xbox One and Xbox 360, and Chroma for PC.