Yes it has been mentioned in some larger CCR and GGL threads before and that's probably now been recycled into the blogs. Both the Concorde Team and BaxterStorey staff have mentioned plans / work going on in T3 and T5B since the beginning of the year, but with LHR changes it's probably best to wait until it' is close to completion (given what happened to the Cathay and Qantas lounge timetables a few years ago). There is new furniture in all of the lounges as far as I can tell though it's just a few items in CCR and more than a few in T5B (albeit presumably designed by someone quite short of stature, some seats and tables are rather low à la QR).