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On his blog, mix engineer Ken Lewis may have let slip the name of the Making the Band 4 band. He says:

keep a listen out for the new Making the Band group, "826 Boys", their new single, also serviced yesterday is called "Got Me Goin". They are 5 male R&B singers who can flat out sing their $%^* off!

826 Boys? First reaction: it doesn't really strike me in a memorable, unique way. Also, I don't think it really fits the image they seem to be crafting, as far as the whole image they were crafting out. These are men, not boys, right? This is an unconfirmed report and I will follow up to see if I can confirm it. For now, regard it as a rumor.