This is a fan-made calendar intended to help keep track of Sengoku Basara news. If you know about an event or merchandise release that I've missed, please leave a comment and I'll make sure it's added as soon as possible!
I've tried to cross-reference events with the corresponding news posts where I can. Otherwise, the Search bar should help.
Please note that the magazine release dates are recurring events and it's unlikely that every issue will contain Sengoku Basara news. Information from major magazines often leaks online a few days before the official release date.