Reader Mark's brother just sent over this pic of an "OS X iPhone" banner found on the WWDC show floor in Moscone Center. You can't really tell much from the shot (no 3G iPhone leaked), but it does look like iPhone will be a big topic next Monday-something we've known for a while. Crunchgear also found these shots by Gernot on Flickr which also shows OS X Leopard. Check those shots out in the gallery.

[Flickr via The Crunch - Thanks Mark and Mark's brother!]