FUD Zilla claims AMD will soon release a new RV770-based graphics card, the Radeon HD 4830. This card be cut-down version of the Radeon HD 4850 and will compete against the GeForce 9800 GT.
ATI is about to release a new old card called Radeon HD 4830. It is based on the well known RV770 chip and this card will have a 256-bit memory interface.
The key difference from Radeon 4850 will be the pipeline numbers as ATI plans to cut the pipelines count. We don't know how many branches will be cut but it will end up will less pipes than Radeon 4850 and 4870.