Nokia watchers are feverishly poring over Finland's trademark database for clues to the phone giant's future products after 'Money', 'Booklet', 'C series' and 'X series' turned up late last week.

Of course, all they can say is that Nokia has applied for these trademarks - there's no guarantee they'll ever be used for shipping product. Plenty of tech companies registered trademarks that don't get used.

That hasn't stopped World+Dog speculation what C and X might represent - a new brand to replace 'Classic' and to indicate Maemo-based kit, respectively, are the current favourites - but there's no known foundation for such claims, plausible though they and other suggestions sound.

Booklet is generating the most interest - is it the brand for upcoming Nokia mini laptops? Again, that's a (very) plausible explanation, but the speculation is no more founded in hard information than the 'what could C and X signify?' debate. ®