Yes, the DC pump is going to be retired and a new version of the pump is coming out in a couple of months with a new version of some of the skimmers.
If you are looking for a skimmer now, here is what I would recommend on your 200 gal system... http://www.coralvue.com/reef-octopus-sro3000int-super-reef-protein-skimmer
In terms of spare parts, even though we are retiring the pump, we will still honor the warranty and do support for it. But if you want to purchase extra parts, I would recommend the impeller and the controller box just to have in case something happens to one of them.