Picture 7.JPGNo details have been released about what exactly will happen on tonight’s very last episode of “The Late Show with David Letterman” (CBS, 11:35 p.m.).

That doesn’t mean there will be no guests. I’m guessing Letterman would be as uncomfortable just talking out the hour as you would be listening to it.

An admirer of Johnny Carson, he’d probably prefer being succinct and sincere at the end of the program though there’s no saying he won’t go splat with a Velcro suit either.

Jay Leno, who was batted about as a final guest, would put an end to that long rivalry perhaps, but apparently that’s not going to happen either. Maybe a string of stars will run in, one after another, the way Jimmy Fallon began his show.

It will be a big thing, though. One you ought to watch. Because after he’s gone, despite whatever Stephen Colbert will accomplish in the same studio in September, it won’t ever be quite like this.