i'm pretty certain that there was an upcoming new season.
i can be mistaken tho
...The first season, called just Nodame Cantabile, was broadcast in 23 episodes from 11 January to 28 June 2007, and the second season, called Nodame Cantabile: Paris Chapter, was broadcast in 11 episodes from 8 October to 18 December 2008....An original video animation (OVA) episode was included with the limited edition volume 22 of the manga when it was published in Japan on 10 August 2009,[17] and a third and final anime season, called Nodame Cantabile: Finale started airing in January 2010.