I'm seeing this estimate from IHS repeated all over the place right now.A few examples:Who is IHS? And why is everyone suddenly quoting their numbers? Does anyone have a link to the source data and when it was dated?As for the 76.6 for PS4: we already know that PS4 has reached 79m in April, based on official numbers from Sony - was that sold to retailers or consumers? Although I find it difficult to believe there are over 2m PS4 sitting idly on shelves. And when is this IHS data from?EDIT: Sorry, the IHS data is to end of March 2018 - it says so in the bloody tweet (I blame lack of sleep due to a newborn!)