Don't forget, we'll likely get a preview of the all new iTunes that's supposed to be coming this fall.
Features to cover: new processor, upgraded rear camera, new iSight HD (probably), NFC (probably), LTE (guaranteed), new 4-inch 16:9 display, new connector port (with optional Thunderbolt support?), and new iTunes.
Plus new iPod nano and new iPad mini? Big event. No chance they try to cram the iTV into it. I'm betting that will sit until January/February at the earliest, and when it does get revealed will probably get treated like all of Apple's other devices: introduced well in advance so App developers can get to work.