Nokia will probably be unwilling to comment because this will not be native support. ie: you will be using a 3rd party card reader and possibly a powered hub since I presume you are planning to use the USB OTG feature.

However 'any' card should work but it will probably be worth getting a well known brand like A-data, Sandisk or Kingston. Newegg and Meritline seem to be the consistant low cost suppliers.