According to an article from dpreview, after the 40-150 f2.8, olympus are planning on releasing more lenses in the 'PRO' range. An ultrawide and a telephoto prime. Quote: "Olympus has also announced the development of a matching M.Zuiko Digital ED 40-150mm F2.8 PRO telezoom, which is scheduled to be released by the end of 2014. It's given few further details, but the press images show it'll be a substantially larger lens than Panasonic's Lumix G X Vario 35-100mm F2.8 OIS (as you'd expect). After that, Olympus plans to release a wideangle zoom and super-telephoto prime in this nascent Micro Four Thirds 'PRO' range. It seems that these are unlikely to be direct Micro Four Thirds equivalents of the existing Four Thirds Zuiko Digital ED 7-14mm F4 and Zuiko Digital 300mm F2.8, but instead offer different headline specs." Source: Olympus introduces M.Zuiko Digital ED 12-40mm F2.8 'Pro' zoom: Digital Photography Review I'm looking forward to seeing what they bring in a new ultrawide zoom. Weather sealing, ability to take filters and better image quality than the existing 9-18mm?