Neowin has updated their article on the new PS3 model having backwards compatibility:
"This looks to be a mistake with the translation, after all.
Member anemone states that the correct translation is as follows:
'This product is not compabile with "PlayStation 2" proprietary software.'
Furthermore, different translation tools give similar results to the above.
Bing gives 'This product compatible with PlayStation 2-only software has not.' and Yahoo's BabelFish gives 'This product “play station 2” has not had the compatibility of the private software.'.
There you have it, nothing to see here. Move along."