Cayman GT4

やはり出る様ですね！

The old wisdom when it came to the Porsche lineup was that the Boxster and Cayman needed to be kept in line so as not to encroach on even the lower end of the 911 range. But with the latest versions of the compact roadster and coupe, that logic has gone out the window. Especially with the introduction of the latest GTS models. But that's not the end of the story.

According to Motor Trend, Porsche is working on an even more powerful version of the Cayman that could carry the GT4 badge, positioning itself along the same lines as the 911 GT3 and GT2 – only, you know, smaller. Although our sources at Porsche would, predictably, neither confirm nor deny the report, MT has it that power could come from either a turbo-four or a more powerful flat-six, mated to the beefed-up DCT from the latest 911 GT3. A similar version of the Boxster could bring back the RS Spyder designation.

ケイマンにはGT4、ボクスターにはRSスパイダーの名称が与えられる模様。。

時期早々にGTSが出てきたのもこの為でしょうか？
次のMCで4気筒ターボにして911との差別化を図る狙いもありそうですね。