A leaked Nokia mobile phone hierarchy from the MobileReview forum reveals that the Finnish handset maker plans on releasing four new handsets in the future. Dubbed C7, E7, X7 and N9, nothing new on the handsets has been revealed. From rumors around the web, it's expected the N9 will be a successor to the N900. It is expected that this will be Nokia's first handset with the MeeGo OS.
The chart also reveals an ultra-exclusive S-series, with no model names indicated. The translated description of the series makes mention of limited edition phones that don't show in any other product series.
Details on the other upcoming handsets such as the E7, C7 and X7 remain unknown, though like others in the range, will focus on business, mainstream and entertainment use, respectively. When these devices will launch remains unknown, but later in 2010 is likely.