The Inq reports ATI will use its Rialto bridging chip to launch Radeon X1600 and Radeon X1300 AGP cards in 2006.
The Radeon X1600 AGP is the first to come and it can be expected in middle to end of January. The Radeon X1600 PRO AGP card is based on the RV530 and it's bridged with Rialto chip.
We expect very similar clock speeds from AGP parts.
The second to come is X1300 based AGP card powered with RV515 chip and bridged down with Rialto. This card is scheduled for February time and until then ATI will try to keep people happy with Radeon 9550 and 9250 that is, happily, shipping as we write. These are still Shader Mode 2.0 parts but they are doing just fine in this market segment.
The Radeon X1800 won't be bridged to AGP as ATI decided to quit production of its high-end AGP graphics cards, just like NVIDIA did.