Basically, everything is new.
When it comes to naming cars, Porsche loves numbers. It's a wonder that the Cayenne and Macan SUVs don't have numerical designations in front of their nameplates. Porsche just announced that it would continue the trend, with the Cayman and Boxster officially getting "718" in front of their names. What's more is that the new 718 Cayman and 718 Boxster will be powered by mid-mounted turbocharged flat-fours. Smaller engines may sound shocking but we've known about this news for a few months now.
Hell, we actually knew about the whole 718 thing for almost a year thanks to a report from Automobile. Hardcore Porsche fans will recognize the significance of 718. It was a racecar rolled out in 1957 that captured a few checkered flags, including a class victory at the 24 Hours of Le Mans in 1958. As you might have guessed the 718 was powered by a flat-four. In addition to the new engine and names, the 718 Cayman and 718 Boxster will swap price tiers. The Cayman will be cheaper than the Boxster as convertibles usually cost more. While the Boxster isn't exactly a Cayman with the top chopped, Porsche did say in its announcement that "the 718 Boxster and 718 Cayman are showing more similarities – both visual and technical."