The rules did not change at all,but the new design will hopefully stop questions such as "Why I was not allowed in the TG lounge when flying CX from BKK,despite the fact that it's on the OW lounge finder (RJ/QR only).

In regards to LHR T4,it's always been the case that MH J/F pax can use the QR lounge and that Emerald/Sapphire members flying QR Economy (and not allowed to QR lounge) can use the MH J/F lounges (non status QR J/F pax can also use the MH lounges ofcourse).