Konica Minolta filed a patent in Japan for a 43mm f/1.4 lens for Micro Four Thirds mount. This is an unusual development because after Sony bought their camera business in 2006, the company has not announced any photography related products (they actually withdrew from the photo business on September 30, 2006 after laying off 3,700 employees).
Here is a list of all companies that are currently part of the Micro Four Thirds System Standard Group:
