Somehow, I do not think that major news like an official end to development of 4/3 SLR lenses (but with new 4/3 SLR bodies still promised according to the same source) would come from "Marketing Managing Director Olympus Europe"; it would come from an Olympus Japan.
But the story is at least quite plausible, especially if Olympus expects to be able to adequately support current 4/3 SLR lenses on Micro Four Thirds bodies, along with having plans for new higher-level m4/3 bodies and lenses now that the consumer level m4/3 models are producing good revenue and a group of customers who might soon want an upgrade. My hope, somewhat supported by hints in patents and such, is that mirrorless systems like m4/3 will soon offer Phase Detection autofocus through AF sensors embedded into the main sensor itself. If so, they would match or exceed(*) the AF speed and accuracy of SLR's, and could do this also when SLR lenses are used on those mirrorless bodies via adaptors. If that is achieved, the transition from 4/3 to m4/3 would not realty strand anyone's current equipment. (One rumor is that Nikon will announce such a "non-SLR but with PD-AF" system this week.)
(*) exceed PD-AF alone by avoiding front- or back-focus problems, and by also using the virtues of CD-AF when appropriate, like being able to check focus at user-selected points anywhere in the image.