HBO ORIGINAL SERIES (HBO) - The pay channel has confirmed its summer schedule, which will see the network expand to three hours of original programming on its signature night. It all starts on Sunday, June 10 at 9:00/8:00c with the swan song of "The Sopranos." Said finale will lead into the series premiere of David Milch's "John From Cincinnati" at 10:00/9:00c. The following week, on June 17, "John" will slide into the 9:00/8:00c hour where it will be bookended by season two of "Big Love" at 8:00/7:00c and season four of "Entourage" at 10:00/9:00c. Closing out the night then will be newcomer "Flight of the Conchords," a "Curb Your Enthusiasm"-esque comedy about the fictionalized life of the New Zealand folk parody duo of the same name, at 10:30/9:30c. Beyond this summer, look for the serialized comedy "In Treatment" and the relationship dramedy "Tell Me You Love Me" in the fall while fellow newbies "12 Miles of Bad Road" and (potentially) "True Blood" are due in 2008. ("Blood," which is currently casting its pilot, has yet to officially be ordered to series.) And finally, last but certainly not least, look for the final season of "The Wire" and a fresh run of "Curb Your Enthusiasm" sometime in 2008.