That happened many times in the past. Like Rock am Ring '07 was announced by MTV to be broadcasted live, didn't happen in the end.Milton Keynes, was on the TV schedule as well and was canceled for known reason. We all know that nothing is really fixed there. I think the band/label can still change the conditions at any time. I know they broadcasted shows live in 07/08 but LP is also one of those bands that rather looks over the footage to decide what to be shown and what not. Like Rock am Ring 07 for example, many bands do that like Muse for example.
We dont get a lot on TV from LP, so I wouldn't be surprised if it doesn't happen at all.
I'm just skeptic about this kind of stuff, especially with live broadcasts and full shows.