Nintendo's servers have been getting hammered since yesterday. NUS is giving me 503 errors :/
I really don't think this update fixes SSSPwn because there is no reason for them to further patch an exploit with no entrypoint.
Though it might be that they've fixed the web browser exploit used in the Wii U hack.. Or something. They're built off the same software, right?
The WebKit exploit was already patched in the 3DS Web Browser.










