There is no English source yet, jut this Italian language interview in the La Repubblica, but if it says what I think it does, the remaining two Beatles will perform together again. Here’s a rough Google translation, but frankly, it only proves the point I made several times: machine translation is way too unreliable yet. 
It provides entertainment value, though.. here are a few gems:
“Of sure I will salt on the theater box with Starr. Perhaps a lot soon”
“On purpose of concerts, it does not believe has arrived the moment launch a beautiful message playing with its ancient partner Ringo Starr, the only one remained of the clamorous adventure?
“Yes, the task, is in agreement, and it she is also Ringo. We have said many times to make it, indeed, was in order to happen in the last one tour of Ringo, the slid year, but it has not been possible because I was engaged elsewhere. But of it we speak often, it would appeal to to us very, and of sure it will happen, perhaps also a lot soon”.”
Oh, well, machine translation still has room for improvement… but back to The Concert, I know how to make it full (well, sort of).. having (a) Lennon, McCartney, Harrison and Starr play together:
Dhani Harrison did a decent job playing at “The Concert for George”, and both Sean and Julian Lennon are musicians in their own right ….
wow Beatles 2.0 !