Diversification is what's on the agenda next for the 308 and its platform. There will be a sedan derivative still based on the EMP2 platform, which we think will be called the 408. There might also be a convertible, though we're not sure if they have the resources to build one.
Unlike its predecessor, which had been converted into a longer, slightly wider coupe+convertible, the new 308 could be done up as a traditional Cabrio. Theophilus Chin has rendered such a car in a style similar to the Golf Cabrio or the Audi A3 Cabrio. A short body, only two doors and restricted rear passenger space make this more of a 2+2.
There hasn't been any sightings of this type of Peugeot, so this rendering is purely speculative. But we doubt the automaker will resist having a go at making it.