Yes, in a roundabout way. There was an excellent summary and re-review of the 256GB V4 (w/FW 1.5) explaining how the performance/storage mode works as well as the mimic-ing of SLC on RWL but now the link just reloads the home page. :/ The new 1.5 was supposed to extend performance mode past the 50% barrier by tweaking garbage collection as well as give a little speed bump.