Improvements at Highbury and Islington station

There has been a massive amount of work recently on the London Overground and it is not all finished yet.
At Highbury and Islington there are no longer just two platforms
They seem to have grown to six.
The main reason is that the East London line extension run both north and south and will eventually run from Dalston to these new platforms at Highbury and Islington.
So we have a great new interchange for this amazing Overground orbital route.
All down to Ken's transport team's thinking some time back.........