The D600 cashback is actually just a continuation of their spring promotion which offered the same rebate from mid-March until the end of May. It's interesting that they have decided to extend it - presumably it didn't shift as much of the old stock of units with apparently dodgy shutters as they hoped! Maybe this will become a permanent price reduction.
arscii: Call me when Lightroom supports layers. Until that time it's being deliberately crippled by Adobe to protect Photoshop revenues.
One place where layers would be useful in Lightroom would be to blend two exposures of the same scene together. I'm thinking in particular of landscape scenarios where one would shoot two exposures - one for the foreground and one for the sky. This avoids the need for ND grad filters and allows more freedom over the blending but at the moment using this technique requires a trip to PS to merge the two images together. If this could be done in LR I would probably never need to use PS again!
blue hour: I´d like to get rid of my Canon gear for good.
I have just done exactly that, partly because of the high prices Canon are now charging. I could not have justified the cost of going from the 5DII to 5DIII, for example. If this lens is aimed at people who will buy the 6D instead of the 5DIII then it is clearly way too expensive.
I sold all my Canon gear and bought a NEX 7 plus various lenses. For the occasions where I need a dslr (child portraits) I bought a Nikon D7000 and 35 / 50 primes. I still have change left over even from the prices I got for the Canon gear used!
I think Canon have lost the plot to be honest.