Apple is once again waiting for the go signal from Intel before announcing another update for its Mac Pro workstations.

The revamped Mac Pro will use Intel's new Penryn processor and will be the first architectural overhaul to the Mac Pro line since Apple announced the Intel-based Power Mac last year.

According to AppleInsider, Apple's contribution on hardware manufacturing is essentially complete. The Cupertino-based company is merely waiting on when Intel can deliver enough of its new 45-nanometer CPUs, specifically the Hi-k Xeons.

The new Mac Pro line will feature two quad-core "Harpertown" Intel processors with front-side bus speeds of 1.6 GHz and 12MB of L2 cache. The new 45-nm Xeons, which feature clock speeds of up to 3.2GHz, will reportedly arrive starting mid-November.