Gintama anime Might End in March
There was a tweet that went out from Gintama's supervisor that Yorinuki Gintama-san run will end in March. The supervisor, Takamatsu thought the series would run through the summer but TV Tokyo advised him Aikatsu! is slated to take over Gintama's time slot starting April 4th... so if Gintama will still continue is up in the air at this point. The tweet has since been deleted.
Seems like a lot of bigger anime series that have been running for years now are either ending or up in the air if they will be continuing. There was a small period of time that people were speculating that Bleach would end soon as well, but nothing solid to that effect has been announced.