Arc System has stated that AC+ will be released in October and you can get it through PSN or Xboxlive. As for the +R we will have to wait later but we have been assured that it will happen. To clarify the R is for the Ringwood system used in the arcade cabinet. Here is the article: http://shoryuken.com/2012/08/19/guilty-gear-xx-accent-core-plus-heading-to-playstation-network-and-xbox-live-in-october
As always thank you for reading.