Bravo is being rebuilt as a CAT C width taxiway along the centreline of the existing Bravo, which was previously runway 15/33. I don't think Charlie is included for rebuild or re-alignment at this stage, apart from where Charlie forms part of the North and South aprons which are being completely rebuilt and extended in area as Barling Magna says.
This is certainly a more extensive (and expensive) project than I had expected to see.