I think the Panther pics are fake. At first, I got all excited to see the secret screenshots, but upon further examination, something seemed… off. Then I read this post on Slashdot, which was a reprint of MacRumors forum post. The kicker: Second, the “% Nice” uses a , to seperate the decimals, not a . like the rest of the %’s. That’s a big one. Also, the comments about the lettering on the Mail screenshot are spot on. The lettering is all wrong.
Fakes. That’s my take.
But I guess we’ll know for sure on Monday.