The folding metal hard-top has been ditched in favour of a fabric roof, allowing fewer styling compromises and less of a weight penalty.
The fresh name helps distance the model from the Astra range as well, even though the car revealed in these teaser shots has a similar design to the Astra GTC.
Vauxhall told us there’s a fresh platform, but would not reveal if this is all-new or simply developed from the Astra’s. It did say the Cascada is longer than the hatch, measuring 4.7 metres – even bigger than an Audi A5 Cabriolet.
So as not to steal the limelight from the Adam city car, Vauxhall will not exhibit the Cascada at the Paris Motor Show. Full details will be revealed in mid-October before the car’s UK debut next spring.
What we do know is that the Cascada is a four-seater conceived with luxury in mind. It’s set to benefit from Vauxhall’s recent handling advances, like the HiPer Strut front suspension used in the VXR.
The Astra’s latest engine line-up will be boosted by the addition of new stop-start 197bhp 1.6-litre petrol turbo engine, but after the car’s launch in the UK in the spring of 2013.