I just spoke with a customer service rep with Dish Network, who said they were still in the process of negotiating with the NBA on renewing the contract.
When trying to pin him down on what the odds were of a renewal, he (understandably) gave me the non-committal "we're still negotiating."
I have had it for the past several weeks, so pre-season games have been available. I hope they will continue to grant access to games during the free preview period, and have things wrapped up by the time that ends (in early November).
If anyone gets any new info, please post it here. I'd hate to have to make a switch to another provider for this reason, but I will.