The SP-570 has not been reviewed yet, but the SP-550 and SP-560 have been reviewed.
Here is a comparison of specifications chart:
Look for the Green link right under the photos of the SP-550 and SP-560.
Those links will take you to a review of the cameras.
I am am interested in possibly purchasing the new Olympus SP-570 UZ digital model. Is this a good camera? I would be interested in hearing about people's experiences with this new model or even its predecessor the SP-550.