I'm not sure this is massive news. Not being an expert, but it looks as if AIDU's (or at least the one Flt Lt and two SNCOs in APATC-1) days are numbered and this will bring the design/format of TAP charts, procedures etc into line with PANS-OPS standards. I don't see that this has much relevance to controller licensing.
It was my understanding that a high percentage (80%?) of the current JATCC meets ESSAR 5 requirements so, from that perspective, the licensing requirements are already converging.