Looks like the Sound Shapes team has been teasing an upcoming DLC announcement.
The tease was announced yesterday on Twitter and today on Facebook with only a date being given, March 12th. The team did go into a small bit more detail on Facebook saying “New beats and a new way to play!”
The last set of paid DLC added a ton of new sounds to create with plus the addition of brand new Beats School levels. Also remember that Sound Shapes DLC is cross buy, so you will get it for both PS3 and Vita if you purchase it. We have reached out to Sony and will be sure to post more details if they let us know anything more.