When I signed up for VIP, I was specifically told that our dessert party would be together with the FtF people...and not separate. I think the description of the VIP tour states "semi-private", or something similar, which would indicate that the 2 groups are combined for the desserts.
As far as the dining CM's go, I have received so many different answers. No one has specifically told me that they're not having it, though. The 1st one however did tell me that Disney has only ever done dessert events at the MK, and never at HS. !!! The next 2 said there's nothing out about it yet. Then the other day, I was told "Yeah, I remember when they did that last year in OCTOBER." She then asked her Sr Mgr about it, and came back & told me that they haven't heard anything about it yet. She said to watch the parks blog because many times they will announce things on the Parks Blog before they "get the Memo", as in booking for BOG.
When I call, I ask about the Star Wars dessert party for fireworks viewing, and for the parade, and then mention that last year it was called Feel the Force, and not sure if it will be called something different this year. A big problem is just getting the CM's to check their system, and not just say that they haven't heard anything about it yet.