Does anyone know if the new dvd nav now covers more than just the US?

I looked on the navtech site assuming they still provide the disc's but couldn't find any intel on it..

OR

maybe another thing.

I saw on ebay that someone is selling the drivebay from the MCS and by taking a quick peek at the DVD upgrades on the web it seems that it is exchangable (the drivebay).

To what extends is it exchangable? Will it accept like a drivebay from the comand? Or a non-merc model make drivebay? or maybe a drivebay from an Alpine system?

I am still looking to make this thing work.

thnx