There was definately something up yesterday and there was a brief note of it made in the MR forum. I posted but I was surprised that very little was being made of it particularly with the triple miles in July.I could only get one way in July but at this price I'm not complaining.

I paid $487 RT SFO-LON. Going out in July and returning in August! When I went to book a second trip leaving in June returning in July, I made it through to the final booking page pressed purchase and then was unable to complete the transaction. Apparently they were pulling these fares as fast as they could.

In the mileage run forum someone suggested they had loaded the wrong seasonal fares. From SFO they were available mainly mid week.

So congrats to the OP!