(Old post) I just looked at upcoming events in Hetalia on the archives and saw this:
"Volume 6 of the Hetalia manga is slated to be released in October 2013. (Japanese)"
A sixth manga could mean a sixth season! Perhaps there will be one after all!
UPDATED It's official! The 6th season is to be called Hetalia: The World Twinkle! Thank you, ShinyRainbowMario and StarShineTheAlicorn, for letting me know!
EDIT (1-24-15): Thanks to Red-BlackRidinghood for reminding me! Season 6 (Japanese dub) will air sometime this year! Proof: hetalia.kitawiki.net/index.php… and hetalia.answers.wikia.com/wiki…
English dub will likely arrive a year later.
EDIT (5-21-15): Thank you Ajones123 for bringing up the month of release! The World Twinkle will air this July.
"A sixth season of the anime, titled Hetalia: The World Twinkle, is slated to air in July 2015. (Japanese)" -Hetalia Archives
July 3, 2015 to be exact. Thanks astralfleur!