Sony offers three class memory cards: high performance, value-added, and entry-level class which are support AVCHD and MP4 format for you who demand class-leading capacity and transfer speed. According to Sony, the cards are the perfect partner for your Sony’s cameras and camcorders from casual photography to the most data-intensive imaging applications.
In addition, the high performance class(class 10) SDHC cards features up to 22MB/s transfer rate;available in three size storage:8GB, 16GB, and 32GB. it’s the fasters SDHC card among others two. And the value-added class(class 4) is available in 5 size storage:2GB, 4GB, 8GB, 16GB, and 32GB with up to 15MB/s transfer rate. Meanwhile the slowest version is available in 3 size:2GB, 4GB, and 8GB. Both value and entry class are available in both SD and SDHC.
New Sony SD and SDHC cards is expected to hit market in January 2011. No information about the pricing yet. Did I mention the eco package? [Dandy Gadget Source]