Season 17, "Pokemon the Series: XY" will premiere on Cartoon Network on Saturday January 18, 2014. The first two episodes will re-air before brand new episode begin airing on February 1st.
Also, "Mewtwo - Prologue to Awakening" will premiere January 11th, followed by a re-airing of the 16th movie, "Genesect and the Legend Awakened". "Mewtwo - Prologue to Awakening" is a half hour special detailing the origins of the Mewtwo seen in the 16th movie and features Eevee trainer Virgil.
And to wrap up the January goodies, the digitally remastered version of Pokemon The First Movie will premiere on Cartoon Network on January 4th.