Yeah I just got the same email from gun dog supply about the dc 50. It does look good! But they did not make it compatible with the 220 go figure lol now will have to up grade to the 320 but I have used both and don't really see I big difference! That's why I never up graded, but I don't really like the dc 40's even know I have a whole fleet of them
unless you are looking for the best deal or already own a 320, i would hold off on the 320, skimming threw some of the info it sounds to me they will be putting out a new better handheld more capable to handle the collar with better range...just my two cents.
I don't really want a 320 it doesn't really seem to work that much better, I mean it does have some good features but not worth buying one, cause your prob right they should be coming out with a new receiver soon !