Porsche says fuel consumption and emissions are central to its future engines but has ruled out fitting a four-cylinder engine to either its 911 supercar or Cayman and Boxster sports cars; and manual 'boxes are to continue:
http://www.caradvice.com.au/214790/porsche-911-cayman-remain-6-cylinder-manual-gearboxes-continue/
That's put an end to all the speculation then......!
Jeff