Panasonic 12-35mm f2.8 (M43rds) now officially announced [updated]
UPDATE (May-21-2012 1:22am NYC time): The Panasonic 12-35mm f2.8 Micro Four Thirds lens has been officially announced! Its formal name is H-HS12035.
+ available for pre-order for $1300 at Amazon by Amazon [NEW!]
New Hands-ons and Previews
+ review at SLR Gear [NEW!]
+ review at Photography Blog [NEW!]
+ hands-on at WDC? with tiny samples from a pre-production lens [NEW!]
+ review at ephotozine
+ hands-on at dpreview
+ hands-on at Pocket Lint
+ the Digital Story opines on the reviews (center sharpness)
DSLR Magazine has a gift for Micro Four Thirds photographers! An early first look at the new Panasonic 12-35mm f2.8 (Micro Four Thirds) lens, which you can also read computer-translated. This includes a variety of test results, along with a couple of real-world sample pictures, and detailed specifications as well! The computer-translation says something about weather protection.
As far as size is concerned, there is an epic picture there showing the Tamron 24-70 side-by-side with the Panasonic 12-35mm f2.8. It's not "Twins" (Arnold/DeVito) but close :)