OpelOpelGermany, 1863 > present85 models
5151 photos
8 videos
has a second reveal planned for the Paris Motor Show other than the AdamOpel ADAM Gen.1Germany, 2012 > present25 versions
122 photos
city car. The new four-seat, soft top convertible is called the CascadaOpel Cascada 1.4 TurboGermany, 2013 > present11 photos
after the Spanish word for waterfall. 

The car is a 4.7m long, mid-size sedan. The top can be opened at up to 50km/h. The new car uses chassis and suspension elements from the InsigniaOpel InsigniaGermany, 2003 > present409 versions
661 photos
and Astra GTCOpel Astra GTC Gen.1Germany, 2011 > present18 versions
78 photos
. That likely means that the platfrom is coming from the Insignia because the two cars are similar in overall length. 

The Cascada will be on display in Paris with Opel's other new cars the MokkaOpel Mokka Gen.1Germany, 2012 > present55 versions
81 photos
compact SUV and Adam city car. 

Sales of the Cascada will begin in early 2013.

As you can see from the pictures, Opel is not fully revealing the full car yet.