Rumor of a new four-thirds lens, Olympus may have a Zuiko 30-150mm Lens with F/3.3-4.2. This is an impressive aperture for such a variable telephoto lens. I can't read what the rest of the website is saying, but this is rumored to be a new lens announced this year.
[Source] https://egami.blog.so-net.ne.jp/2010-07-10
Avi
Oly has some crazy fast zooms. They have their top of the line f2.0 zooms which are supposedly some of the best glass money can buy.
Olympus 35-100mm f/2.0 ED Zuiko Digital Zoom Lens
Olympus 14-35mm f/2.0 ED SWD Zuiko