September and October will see the release of two new DVDs starring the tenor saxophone colossus Sonny Rollins. As with everything else in this mighty musician’s career, timing is everything, and these particular releases indicate something of a disconnect from what we’ve come to expect. Summer is the time you want to see and hear Mr. Rollins, which is why he usually gives his annual concerts in New York in the dog days of August. Thus, even though the two DVDs (both of which feature him playing live in Europe) are arriving in early fall, the best time to experience Mr. Rollins in person is Wednesday, when he plays Central Park’s Summer-Stage.