I know what you're thinking, and I'm thinking that same thing: does Sony make anything that actually works with SD cards? [Yes they do, dumby! The Alpha DSLR-A550] Okay, but it's still not their preferred format. Infact, the press release goes on to say:
Memory Stick is the recommended media for Sony products, offering a range of unique benefits. For example, the high-speed “HX” Series’ capabilities are optimized when using the burst shooting mode in Sony’s α (alpha) DSLR cameras, as well as high-speed archiving of high definition movies shot with Handycam® camcorders and Cyber-shot® cameras.
So, yes, they are selling SD cards, but they sorta, kinda don't want you to use them!