There is also another picture from Tecnoblog of Sony Brazil's application letter to Anatel regarding the hardware. According to the letter, the new model of PS3 will be identical to one another, except there will be three different hard drive sizes: 16GB(?), 250GB, and 500GB.
Sony has yet to confirm or deny the new Model, but considering the company filed a new PS3 Sku with the FCC, we can guess that this is what it was for.
Head over to Tecnoblog for more Photo's of the device