In early Brera, a steel roof was std and the glass roof was an option (SV), later ALL Brera had a glass roof, but with a full headlining as std (meaning you can't see through it) and the SV option of a sliding blind meaning you can see through it.
Makes no sense to me to fit a heavy glass roof as std, but that is how it is now.
Correct, all post 2007/8 Brera's (in fact the vast majority ever made) have glass rooves, but all S models and any standard Brera where you don't pay for the Sky View have the glass permanently covered by headlining.
You might say this is a rip off as Sky View is now a £500 option - but it's not because they dropped the car's asking price by £500 at the same time. Basically they've given us the option of having the car £500 cheaper without the Sky View.
Why are they making the cars with glass even when you don't want it?
Firstly, according to a dealer I've spoken to, the weight is little different than the standard 5mm steel.
Secondly, it's a cost thing - cheaper to only make one body type on the production line, then just cover or uncover the roof as required further down the production line. The extra machinery and processes caused by having two types of body coming off the production line (steel roof and glass roof) would be expensive and unnecessary, and you'd need to have an accurate grasp of numbers of SV and standard Breras being ordered right at the start of the manufacturing process.