It's arguable whether Sony had a successful E3 because of what it showed, or because of Microsoft's own personal PR nightmare, but regardless, the PlayStation 4 left E3 smelling of roses and Sony is revising its projected sales targets accordingly.
They didn't state any official targeted sales figures, and we wouldn't expect them to, but it is interesting that Sony believes a good E3 could have such an impact on overall sales. I remember the PSP having a great E3 pre-launch, and the DS having a complete disaster, and we all know how that turned out.
That said — general enthusiasm for the PlayStation 4 is at an all-time high and I do expect that sentiment to filter down towards the mainstream. According to SCE's CEO Andrew House, the console may end up selling out in stores.
"Demand may well outstrip supply," he told the Wall Street Journal.