ATI Preparing an X1900XL?

The Inq is reporting today that ATI is preparing a new X1900-based card to compete head to head with NVIDIA's GeForce 7900 GT, the Radeon X1900 XL.  There aren't many details available, but Faud speculates that the XL will feature a single-slot cooler and it's GPU will be clocked at 500MHz+.

"WE learned that ATI has two more R580 cards around the corner. We already spoke about the X1900 GTO cards that are scheduled for April and now we learned that ATI has X1900 XL. This card is meant to fight Geforce 7900 GT, as this card can really outperform even X1800 XT cards."
Tags:  ATI, EPA, Pre, x1, AR