As I understand, the new apron is to become FR exclusive, with a high-level walkway to arrivals although I am not sure if this is related to this or not. But what I don't understand is that the apron only holds 6 B738 sized aircraft, but by this time next year FR should have 10 a/c based. This building work may involve the extension of the apron into the medium stay car park, as previous mentioned in the thread a while back.
Hope this helps
SAM-EMA