NEW=.type only works if there is a new handler for .type.
If you right-click the background of a folder, then open the New menu, and do not see an entry for the type you are trying to create, then it won't work in general.
Depending on the type of .nfo file we are talking about, you may be able to ask for a new .txt file with the .nfo extension. This assumes you want an empty file with the .nfo extension:
FileType NEW=.txt NEWNAME="norename:info.nfo"
(On the other hand, if you need a non-empty template to be created, then you'll need to edit the registry to define a new handler for the type and point it at a template file you have stored somewhere.)
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