The most interesting product Nokia seems to have trademarked is a laptop computer .
The guess comes from the trademark description for the upcoming product,Booklet : “Computers, laptops, smart phones; accessories for computers, laptops and smart phones.”
Of course it could be as well a netbook,if you think that lately many people talked about the launching of a netbook device at Nokia.

Source : http://www.netbookchoice.com/2009/07/20/nokia-booklet-trademarked-name-for-upcoming-netbook/