No, Disney does not release specific detailed information about rentals. DVD does retain 2-4% of the rooms at each
DVC resort and those rooms are mostly used to replace member rooms taken out of inventory during renovations. In addition, Disney also is able to rent any rooms not declared into member inventory - currently this would only apply to undeclared/unsold rooms at SSR and AKV. DVC also has an inventory of rooms available from ROFR and foreclosed ownerships - and no information is publicly available about those numbers either.
The bulk of the cash availability comes from rooms made available by members for non-DVC options using points. The points used for the cruise, other Disney resorts and the Concierge Collection are converted into cash availability thru CRO. Those rentals do not appear in the DVC budgets.
At 60 days before any given date, any DVC rooms not reserved using member points are made available to CRO for cash reservations. Income from those rentals does appear in the annual budget under "Breakage Income". There is a prescribed limit for that income and CRO does also get a % of the income for their efforts in renting the rooms, but the income is used to defray member dues. No specific information about these "Breakage" rentals is published, but the income is certainly reported in the annual budget.
The projected "Breakage Income" at OKW for 2007 was $688,548.