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.

Well hurry it up man we have porn to transfer to externals, we need more speed!
^Same here. I dont want to be stuck with USB 2.0 for a couple of years down the road, while every1 else is enjoying it.
You know, the stuff that were useless 5-6 years ago but we're still paying for in new products.
Also while not as important as those I use the one PATA left for my optical drives. Why bother buying SATA optical drives? They wont be faster.
Or they could ditch the IDE ports like on all newer boards - having to use a chip to do it etc
USB3 to most home users is useless - theres nothing that uses it! They dont know or care that that 2 minute transfer is a USB limitation.
However, I am concerned about the cost?
It'll wring my i7 budget dry...
I prefer to get the P6T Deluxe V2... yet I still want the USB and SATA...
what to do... what to do...
Why bother with IDE? Sure its fine to use old IDE drives but new stuff you should be buying SATA when its the same price if not cheaper!
SATA has interesting features like external support, hot swap, AHCI, higher bandwidths (which translate to lower latencies usually and higher burst rates), aswell as most SATA devices having more cache etc - its stupid buying IDE for new systems.
To say nothing about cable management.
PS/2 keyboards can feel like a necessary commodity in the early startup boot menus unless you enter the BIOS and enable USB keyboard detection, something I've been able to do from my first (2003) rig onwards.
PCI isn't 'everywhere', it's only stuck around this long - and only for sound cards at that - because the port hasn't been dropped in a timely fashion. Much like we won't get 64-bit software before Microsoft stops releasing 32-bit OSs.
I appreciate that some users might have legitimate reasons for using PS/2, PATA or even PCI - though I've yet to see one myself - but those are by far the minority and should be the ones to pay for the privilege with special motherboards or add-on IO cards. Not the great majority.
as for usb 3, the ability to power a 3.5" external drive would be infinitely more valuable to me than the extra band width. if it CAN do this then its awesome, and i want, otherwise i don't care, id be more interested in that new e-sata standard that carries power for the drive as well.
This and DX11 video cards are delaying my upgrade. I'm still on a socket 939.
1 - DDR3
2 - USB3
3 - SATA3
4 - PCIe3 (Yep, 2010)
5 - AMD X3 CPU (optional)
Would like to see PCI slots go away too.
*BTW, the 1990 Amiga 3000's 32bit slots, besides PnP (since 16bit/86) - was/is still faster than PCI.
Keep the PS/2 ports