Olympus M.Zuiko 40-150mm f/2.8 Pro lens hands-on video surfaced over the web. Olympus M.Zuiko Digital ED 40-150mm f/2.8 lens will be a mid range zoom and the release date of the new lens expected to be in 2014.
There is no product image or specifications info yet but the upcoming Olympus 40-150mm f/2.8 lens to be around $1,200 just like the 50-200mm f/2.8-3.5 SWD lens from Olympus.
Olympus also filed a patent for the 1.4x Teleconverter lens. Olympus 40-150mm f/2.8 Pro lens design can be seen too. See here for the details.
Olympus M.Zuiko 40-150mm f/2.8 Pro Lens Hands-On Video
Olympus to release three more M.Zuiko PRO Micro Four Thirds lenses in the line up. There will be three more Olympus PRO lenses coming in 2014. There is also a Pro wide angle zoom rumored to be a M.Zuiko 7-14mm f/2.8 and a Pro Super-telephoto lens between 150-350mm rumored to be M.Zuiko 300mm f/4.0.