The Apple rumor-mill is all but certain that new Power Mac G5 replacements will be unveiled during Steve Jobs' WWDC keynote on August 7th. Now, Think Secret has "confirmed" that unlike the other Mactel's released to date, Apple's new top-of-the-line desktops, likely dubbed the Mac Pro, will sport a "substantially different" enclosure from their ancestry. The new boxes are also said to sport Intel's Core 2 Duo (Conroe) chips in configurations similar to the most recent Power Mac G5s; a single, dual-core proc in the low-to-mid range systems with top-end systems going 2 x dual-core for some hot, quad-core action. No word on clock speeds, unfortunately. TS' sources also claim that the MacBook Pro will also see a redesign when the mobile version of those Core 2 Duo (Merom) chips are released around August. And, uh, no we don't have any pics of the new designs -- a statement sure to incite graphic designers everywhere into a development frenzy of purported spy-shots. Of course, if you've got the real deal, well, you know where to find us.