According to the cover note of the manga volume 35, a new anime project of Berserk was announced to get underway. More information will be given in Young Animal magazine and the official twitter.

Source: Scan of the cover note

Story by [profile=ShiroiRyu]ShiroiRyu[/profile], [profile=Touka]Touka[/profile]

Updated on September 29th
Anime director Kitakubo Hiroyuki heard that Studio 4°C is producing a full CGI anime of Berserk utilizing motion capture technique.

Source: Kitakubo's tweet

Updated on January 5th & 6th
According to Newtype magazine February issue, an anime movie of Berserk was announced.

According to Natalie, "Berserk Saga Project" was announced to be launched. It will animated the entire story of Berserk. As the first work, an anime movie will be shown within this year.

Key illustration of Berserk movie

According to the official twitter, the project won't be completed in several years. It will last ten years or more.

Sources: Natalie, Berserk project official twitter