I am pretty sure that Black Cat bio was there even when USM was airing. I seem to recall it was brought up in one of that show's News & Discussion threads. I think the only new additions to that bio section are Spider-Girl and Spidey's prototype suit but I'm not sure if those bios are what the show will actually use. And the Comic-Con panel was announced a while ago. I already posted about it (check a few pages back). They only updated its description to add who will attend and that they'll screen the first epidode and announce the voice cast.