B&H also has it for $1069. And here is a detailed 2 page review.
Thanks for those links. I already knew that the lens is of very similar size and nearly as heavy as the 300mm f/2.8 II plus 2xTC so I had decided already not to buy. I downloaded all the photos and compared them with shots I have taken with the 300mm+2xTC on the 5DIII at similar distances and the 100-400mm on the Canon 7D. OK, the Tamron isn't as good the expensive prime but it compares pretty well with the 100-400. So, it look likes the Tamron is an excellent buy for those who want cheap access for a reasonably good 600mm. The reviewer did seem to have difficulty in getting his technique right for hand holding.
If the lens were smaller or could be retracted like the 100-400, I would buy one for travel. So, its continuing the long wait for the 100-400mm II.
The Canon f2.8ii + 2xTC is much heavier.
Canon 100-400mm 1.38kg
Tamron 150-600mm 1.95kg
Canon 300mm f2.8 ii + 2xTC 2.675kg
The Tamron when collapsed is the same length as the 400mm f5.6