Today, Nikon has released a Service Advisory on Nikon D600 sensor dust issue. As you may very well know, the camera has been plagued by sensor dust accumulation problems ever since its release, which caused a lot of doubt among potential buyers. Finally, Nikon realizes the problem is very real and of concern to many. Here are separate links for US and EU customers:
Why is their acknowledgement so important? At times, new cameras may exhibit certain defects or issues when launched. Some are rather minor and easy to fix, like the Canon 5D Mark III light-leak issue, while others may be more persistent and annoying, or even render cameras unusable. It is difficult to expect everything to go perfect every time, to be completely fair. Yet recently, Nikon seemed to have gotten a lot worse at avoiding manufacturing defects.