This link to a story in the Reno Gazette-Journal made it past me. It says here that Reno will be next stop on the NBA D-League minor league basketball gentrification tour.
Another destination the D-League is dealing with is Portland, Maine. With the resent resurgence of the Boston Celtics, the D-League hope to capitalize on some of the other somewhat-success stories in minor league hoops in New England, the Vermont Frost Heaves and the Manchester (NH) Millrats of the ABA.
My next guess is that the D-League will target the Albany Patroons of the CBA, and rumors circle that the 76ers will look to place a team in Trenton, NJ. Trenton was the home of the short lived Trenton Stars of the original IBL, but now their home court, the Sovereign Bank Arena, however perfect for minor league hoops, remains pretty vacant. However, I can imagine, Reading PA, current home of the Reading Railers of the PBL might make for and obvious choice.