The Porsche Cayman->ke5 topic is hotter than ever with a new, range-topping GTS model getting ready to hit dealerships and an even more powerful GT4 version under development. Still shrouded in mystery, the latter has been been spotted earlier this week wearing its 911 GT3-like rear wing and lower stance.

If the batch of spy shots sent to us by our skilled photographers weren't enough to quench your Cayman GT4 thirst, then this new video that surfaced the web should provide you a lot more joy. Unfortunately, the sound isn't too revealing in regard to what engine might be lying at the rear and the sports car->ke506 was taking a leisurely stroll rather than attacking the Ring.

Details aren't likely to arrive anytime soon, but word has it the GT4 will benefit from up to 400 horsepower. Word has it the oomph may come from a hybrid powertrain that will include either an updated 3.4-liter inline-six or a four-cylinder unit.

If the rumor proves to be true, Porsche->ke1 will finally deliver a true mid-engine sports car that will step into 911->ke282 territory as far as performance is concerned. No need to worry though, the 911 won't be rendered useless, as the iconic vehicle is also set to receive a hybrid version that will have more than 700 horsepower at its disposal.

This is starting to make us wonder if there is something in the mix for the Boxster too -- the Cayman's topless sibling.

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