I've been out of the IPT loop few a couple of years and find myself a little confused as to what version of CM would be recommended for a new install.
My understanding thus far:
4.x - Windows Platform
5.x - Same as 4.x but on Linux
6.x - Same as 5.x (linux only) but with some extra bells and whistles.
Does that sound about right? If so what platform would you go with for a fresh site or does it simply depend on the strategic platform choice?
Yes, that pretty well encapsulates things :)
CCM 5.x is based on CCM 4.1(3) and incorporates that feature set (on a Linux platform). CCM 6.x is based on CCM 4.2(3) and incorporates that feature set (on a Linux platform). The latest CCM 4.x release is CCM 4.3(1) built on Windows server 2003.
I think most people here would advocate going straight to CCM 6.1(1)a
Hope this helps!