ATI's recently shipped reference boards with R580 chip to its partners and is organising road-tours showing of the new product as we write these lines. The PCB looks almost identically to "old" R520 boards, with same cooling solutions and so on. Since the R580 chip is pin-compatible with R520, there was very small number of modifications ATi needed to do. As far as the product line-up goes, you can expect X1900XL, X1900XT and All-in-Wonder X1900XL boards.
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