The “Ultimate Editions” are soundtracks featuring the music of the PT films, exactly as it appears in the films, without cuts for length.

Only TPM had one, alas – the others are presumably languishing in GL’s subsection of the Disney Vault.

And given that the final edits of the PT (all three films) required some nasty chopping work to John Williams’ music to make it fit, I’d personally prefer an “ur-Ultimate” edition of JW’s actual soundtracks as they were meant to be heard (ie, scored to fit the rough cuts of the prequels).