Intel wouldn't have access to that ******! Anyway, it looks like an Illustrator rendering to me.
Of course it's a rendering. The question is whose.
Um, yeah... It's a markup created by Intel's marketing department, or marketing firm.
Do you *HONESTLY* think Apple would release such PR shots to third-parties before they release them internally?
Hell, before the official Intel transition was announced, I knew people who were working on the Apple Developer Transition Machine, and they didn't even know that was what they were working on until a couple years later when I pointed it out! (They didn't have the fancy Power Mac G5 chassis, they were working with the motherboards in generic chassis - they just knew they were making a motherboard for some random OEM.)
Some graphic artist likes Apple's PR designs (who knows, maybe Intel uses the same firm as Apple,) and used similar styling.
My guess is that they'd have graphic design firms internal. Both companies are sufficiently large.