You know, I have to disagree with what I'm seeing as most of the consensus here. I disagree mostly simply because of the size v. sellout time likely for GFV.
DVD is going to have to get something in the pipeline pretty quickly because, in the scheme of things, GFV is tiny, and will likely sell out fairly quickly. With PV the next logical on monorail conversion resort for DVC, it stands to me that this would already be in motion, at least in the early stages.
The one thing that makes me hesitant on believing this is the longstanding rumor that the Poly needs to be completely torn down and rebuilt because of some sort of construction or wear problems that were/are rumored. I can't remember exactly what they were/are but I'm sure some of you do. That would sort of make it illogical to be modifying existing rooms for DVC. Combine that with the fact that the Poly is exceedingly popular and at capacity (so I hear) most of the time, I'm just not sure that they will add DVC first there like they did at AK (by modifying existing rooms/floors). I know that sort of contradicts my first two paragraphs. I'm just thinking out loud here.
The Poly is a logical next step and it's easy to guess that, IMO, without even having to be in the know. IMO, the Poly rumors of DVC there will only strengthen over time as the completion date of GFV nears and they are probably strengthening due to merit.