Whether these variations have anything to do with the intended use of the resort or if they are simply tied to DVC marketing strategy remains to be seen.
It remains possible that Disney itself has not decided. DVC type units not sold as DVC would make wonderful "family suites" - a market Disney is lacking in. The Pop family suites are OK, but for the family with a lot of cash Disney would like to bring down (customers with lots of cash tend to spend on things with margin) - they aren't preferred. Then you have the connecting room Deluxes or putting five in a Deluxe using the daybed with one bathroom. However, I'd think if Disney wants to be successful in that market, they are going to have to figure out a way to limit DVC members renting out their points. Not announcing gives them flexibility to sell what they have, think about future options and change their mind later. They could be building something that could be shared use - some DVC suites, some fractionals, and some family suites held by CRO.
If Disney is going to have a Deluxe family suites option, they may want to keep it quiet on purpose from DVC owners and potential owners. For potential owners, it gives them an option that doesn't involve a huge up front investment - it will cut into DVCs market (but poach into another Disney business). For current owners, they may be disappointed not to have CRV as an option, it will almost certainly make people who do rent frequently mad.
(I think it will be DVC Villas, myself, but without an announcement - there are options.)