DPReview lets loose a Sony press release about the DSC-U50:
Sony has today announced the ultra-compact and stylish Cybershot DSC-U50. This $250 compact digital camera has a rotating lens element with a fixed focal length lens and a two megapixel CCD. The DSC-U50 is the first Sony Cybershot to record images to the smaller MemoryStick Duo format, so far only used on PDA’s and mobile phones. The press release also makes note of a new ‘Memory Stick Duo Pro’, something we’ve not heard of before.
I’m not sure how tiny it is, but I’m an extremely happy user of the DSC-U20, and it’ll have to be microscopic for me to think about picking it up. It does take the Memory Stick Duo format, which means that it has the potential to by tiny!