That review, like the one that PopPhoto did, indicates that Oly continues to build outstanding glass.
But it also caused me to think again about what we trade off when using a 4/3 sensor. I mentioned in another thread that I can overcome the lower high-ISOperformance of a non-FF sensor with the faster glass Oly and Leica produce for the 4/3 format. But of course you give up some DOF with that route. The Oly 12-60 zoom reinforces another trade-off, in that it's very difficult to build a wide-angle lens for that smaller sensor. Sooo I'll keep my 11-22mm Oly and remind myself that I'm still saving $15K or more for a good system compared to a FF system (grin).