This usually takes place every fall, but it was also offered this spring... perhaps we'll see the 1.5 offer more regularly (and I wouldn't complain about that!).
Keep in mind that 60K Asiamiles will also get you a roundtrip BA business ticket from most parts of North America to most parts of Europe... its all distance based, so the further east you start in North America, the further east you can travel within Europe...
This can be better value if you're headed for a 130K BA business destination (ie, YUL-LHR-ATH would qualify for 60K Cathay miles, I believe)