Slightly off topic, but this is great news; that means more nice previous generation lenses will be available at even more affordable prices!
Being economical (or is it cheap), I have found that one can get a lot of bang for the buck using older generation lenses and cameras. This is coming from someone who is having fun using older equipment. For telephoto usage, I am having lots of fun with a Nikon D610 and a Nikon ED AF Nikkor 180mm 1:2.8 and also a manual focus Nikon Nikkor ED 600mm 1:5.6 and when I want/need semi-autofocus, I pair it with a modified Nikon TC-16A 1.6x autofocusing teleconverter.
Maybe it is just me, but I have found a pair of primes covering the zoom range is generally lighter to carry and has better performance. Of course not quite as convenient (or maybe the solution is carry another camera body.)