Talking of which, how about this:

"Tokyo, 5 August 2008, Olympus Imaging Corporation (Olympus Imaging) and Matsushita Electric Industrial Co., Ltd. (Panasonic) today announced joint development of technologies and devices for the "Micro Four Thirds System standard," a new standard that extends the benefits of the Four Thirds System standard for interchangeable lens type digital camera systems by enabling dramatic reductions in size and weight. Under the terms of an agreement between the two companies, they will work jointly toward commercial production of significantly lighter and more compact interchangeable lens type digital camera systems."

http://www.dpreview.com/news/0808/08080501microfourthirds.asp