The 991 will be a totally reworked version of the current 996/997 platform, with the longer wheel base we expect a bit more lateral grip than previous 911’s.
The powerunit will be the naturally aspirated flat six, likely in two displacements, as is currently 997.
We don’t expect any increase in power but expect it to be lighter by about 35kg than the current model from increased use of aluminimum body panels.
We expect there will be a coupe and a convertible body as well along with future GT2 and GT3 models.
Expect more to be revealed at the 2011 Frankfurt IAA in September.