Angel Barracks have a new PDF update for their A.G.S. Black Powder rules as well as a new release from Irregular.
From their announcement:
We have updated the additional rules PDF for A.G.S. Next we will be releasing some scenarios for A.G.S / Form Square. Expect the first of these in the next week or so.
Then whilst the PDF press is hot we will have the next set of PDF rules from Irregular Miniatures Ltd. – their Ancients rules