This is a bit of a complicated situation to condense into a single headline. Digital Video is a research and software development studio out of Rome, who specializes in computer graphics (as their name suggests). One of their applications, Toonz, is the animation tool that Studio Ghibli used to create their video content. If you haven't heard of them, they created Princess Mononoke, Spirited Away, Ponyo, and the cutscenes for the Ni no Kuni video game franchise, among others. In fact, Princess Mononoke was the original use case for "Toonz Ghibli Edition" back in the mid 90s.
Today's news is that Digital Video will be open sourcing Toonz, including some or all of the enhancements made by Studio Ghibli, into a product called “OpenToonz”. This is because a Japanese media publisher, Dwango, purchased the rights to the software and wanted it to be a community project. Rather than selling the product directly, Digital Video will transition into installation, training, and support. They will also have their own version, called Toonz Premium, which they claim will be for companies to request specific customizations. It will be available for both OSX and Windows.
While a lot of studios are turning to 3D applications, like Maya and Blender, for their 2D art, and Blender is 100% open source, more is better. The software will be “presented” at Anime Japan (March 26 and 27) but they don't clarify whether that means released, demoed, on the show floor, or unveiled. Could be worth checking out for any animators in our audience.