They will keep making them as long as people keep buying them. I recently purchased a replacement UNT, could have bought two PCGs for about the same price. I think I got a notice the AHU controllers are done, I don't know if they were big sellers to start with.
I got the word from JCI about 3 months ago that as of January 2013, N2 devices will no longer be produced. With that being said, I can still buy DSC-8500 parts which haven't been made for over 20 years or so. As Mechdorn said though, they will be getting more and more expensive.
Is it true that JCI has announced that they are not making any more N2 controllers?
Yes, I have seen a notice stating that the legacy N2 devices are on the way out. However, they are also adding N2 capability to their current generation field devices. So, N2 devices will be around for a long time to come. I have no idea if these new devices will hach have their own identity or if they will look like VND devices. Does anyone have additional details?
JCI will make some of the new PCV line into N2 for service replacement only. The N2 models for the PCV will be PCV-1815 and PCV-1830. I'm not sure if the will make PCG's with N2 or not. I remember them talking about it but couldn't write that fast. lol