A "new" 55-200 IS STM was posted for pre-order on Adorama last night? Is that the same one mentioned in the inital post? If so, at least half of the rumor is true.
I checked out Adorama's site and didn't see it. Do you have a screen shot or a link?
Gear: 5D Mark III, 135L, 85LII, 100L, 70-300L, 200/2.8L II, 85/1.8, 16-35/4L IS, 35/2 IS, Sigma 50mm Art, 430 EXII