If I were to guess, I'd suspect that this is a deal with either Malpaso Productions or Warner Brothers (or both) and as such would only cover the relevant films under such an umbrella. If that is the case, and it is via Malpaso, I wouldn't be expecting anything from the Dollars trilogy (unless they have acquired the license separately), Kelly's Heroes, Bronco Billy, Where Eagles Dare, or In the Line of Fire, but pretty much anything else Eastwood starred in from Hang 'em High onwards would likely be possible.