Is the News page that is in Curse Client 3 being removed in version 4 or is it just missing at the moment due to something being done to it for version 4?

I don't know for sure, but I bet it is simply missing for now. Since I never looked at that page in v3, you reminded me it was there with a moment of "oh, hey, yeah!" I would suggest you put a suggestion ticket (not a bug ticket) on the v4 developer page.

http://www.curseforge.com/projects/curse-client-v4-windows/tickets/

Version 4 is currently in beta and active development.  Version 3 will not be going anywhere for a while.