The Inquirer is reporting that Asus has canceled the world's first USB 3.0 motherboard--the P6X58--despite the announcement of its upcoming arrival last week. The company apparently offered no "interesting" reason for the discontinuation, adding only that it's working on other things. Whether other things are USB 3.0 related products or not, we don't know.
However, it was originally speculated that Asus decided not to release the Premium motherboard due to problems with Marvell's SATA 6GB, one of the P6X58's major selling points. It may also have been an issue relating to USB 3.0 performance, and that Asus decided to hold off on the technology until a later date.
The motherboard, supporting Intel's Core i7 processor, was slated to provide two USB 3.0 ports, six DDR3 slots, 3 PCI-Express slots, and a SATA 3.0 interface capable of 6 Gb/sec. transfer speeds. When originally announced, Asus did not provide a release date or pricing information. Currently, no USB 3.0-capable products are on the market.
We fired over an email to Asus to find out why the company pulled the motherboard. While we can't disclose comments made off the record, we were told that more information will be passed along by the end of the day. As it stands now, it may be that this particular board wasn't meant for mass production in the first place. What we can indicate though is that Asus is working on a better model.