Studio Deen has a new staff to create the new Hetalia Season 5, The Beautiful World. The director is new too.
http://hetalia.livejournal.com/12364827.html
A preview of what the new look for Hetalia could be is here:
Italy looks really neat here. It could be an improvement since Studio Deen's head anatomy problem, but I am still excited that it will come out sometime in 2013!
Here is some extra news about Hetalia's new Studio DEEN staff.
Director: Hiroshi Watanabe
Character Design: Mariko Oka
Scriptwriter: Kazuyuki Fudeyasu
Source
Post from LJ