I think it will depend on unit size. If you are looking for a 2BR, I think a match will come through but it will be a lot harder than if you are searching for a 1BR or a studio. I haven't seen a 2BR unit sitting in instant exchange inventory either searching myself or reported in the Distressed forum in a long time. I would have to think at least a few 2BR owners are depositing their entire unit. Though I suppose it is possible for Vistana to still lock it off and deposit each side so II/ILG can maximize income with two trade fees.
There are a ton of small units for this fall, but I suspect it is because of the pool closures this fall.