I was happy to see the BR 012 ( 78137 ) in the new items list for Roco for the fall, and wanted to place an order for it with my dealer immediately.
However, looking at the Roco website, there is scant information about the product, and specifically there is no information as to whether a smoke generator will be able to be fitted to the model when it comes out. Since they list that as an attribute on some of the steam engines, I took it that smoke generator fitting isn't a given on their locomotives so I contacted Roco via their website 'contact us' link and shot off an email asking if the unit will be able to be fitted with a smoke generator. It was odd enough that such information isn't clearly indicated on the product page, but OK, I'd had issues with the sometimes scant or misleading information on the product pages before (with 52580 and what the smallest radius it could operate on was).

So this is the answer I got back from them just recently on the question of whether the model will allow installation of a smoke generator:

"Da es sich bei Modell 78137 um eine Neuheit handelt, die sich noch in Ausarbeitung befindet, stehen uns hierzu derzeit leider noch keine genaueren Informationen zur Verfügung, wofür wir um Verständnis bitten."

Translated: as this is a new model that is still in final formuation/development, we don't yet have precise data on the model; we ask for your understanding.

How on Earth isn't that knowledge available to customer service. I would expect they would have ensured this in the beginning of the design process (given that the chimney needs to have the ability to get pulled up to insert the smoke generator, and the internals would have to have the electrical contact surfaces to interface with a smoke generator). This makes no sense unless the customer service outfit is outsourced and doesn't have access to the design specifications, or the design team is not communicating to the sales/marketing org - but then why the hell are they announcing a product with prototype photos and they don't know this info? It seems to indicate dysfunction within Roco. I wonder if this sort of dysfunction has been typical of Roco or is this a new thing?