I'm trying to figure out what the hold up is on the Spurs announcing the deals for Forbes and Landale. There must be some scenarios on the table that the Spurs want to explore using whatever salary cap space they have left before they lock in their roster. From my calculations, they have ~$1.5 million in salary cap space. If they waive Eubanks (they have until Aug. 18 to waive him, it looks like), that gets closer to $3 million. They could possibly try to buyout and/or stretch the contracts for Hutchinson and Aminu to get a little higher.
It makes sense to explore all avenues before signing Forbes and Landale so it'll be interesting to see how long this takes. I doubt the Spurs are trying to sign someone else with the salary cap space they have or can create ... but I assume there are trades available that would become impossible once Forbes and Landale are locked in.