According to these new spy shots of the Porsche Boxster, Porsche might be working on a RS version. If so, we guess it would be published as a special edition just before the next-generation is coming.
The prototype seen here is sporting a fixed roof (though this could only be a temporary measure) as well as an oversized rear wing and new diffuser. Other clues hinting that this could a new RS Boxster are the plastic rear window (designed to save weight) as well as the full roll cage and carbon ceramic brakes.
Source: Motor Authority