Here is the latest news that’s out (in English at least) about the upcoming Anzio OVA.
This was the news on AnimeNews Network and a PV released back in April 2014
Here is a later news and PV on the Fandom Post by Chris Beveridge.
Hopefully we will be able to review the OVA as soon as someone has a TL available (end of July maybe?)
We have been waiting for this for a long time now but the PV’s look really good!