They went down the route of buy 2+ speakers to get louder.
Arguably a better approach as you place them around to be on average nearer so effectively louder too.
e.g. one speaker 6ft away Vs two speakers 3ft each side is half the average distance so each speaker is 4 times louder, two speakers 8 times louder so if each was no weaker than 1/8th volume then is net louder. That means a level of sound volume from one speaker would not be feasible to be battery operated but say two speakers would be for the equivalent volume.
Also arguably two speakers give better stereo separation, if they support TWS.
E.g. two Motion Boom.
I’d also email Soundcore if any upcoming party speakers coming, they may not share publically.