We don't know. I had heard that Mercedes had made the statement, maybe it was misinformed or something, all we know is that it is not in GT6 now and we do not know of any plans for it to be added in the future.
Gran Turismo 6 will get an update 'almost' every month, not DLC . From www.polgon.com not being a smart arse but google has the answer to anything. So the free cars that we will be getting is the vision cars because in my opinion GT6 is just fill in until Gt7comes out as they are already working on it.
PD has already confirmed this by giving us said updates almost every month. But what does this have to do with the Mercedes?
The A45,E63 and the SLS are Mercedes which the OP asked about, I just posted what found.
