User blog comment:B214/Don't ask about season 4/@comment-86.199.208.148-20160703232037/@comment-26345952-20160704014207

@SLNinja what you have read of season for is misleading. They are refering to the side story of High School DxD EX.

The manga has been officially translated and selling in the western market and hence not seing an update of the manga online. However there are still updates but are raw, these are found at a lage called senmanga.

And regarding of Season 4, no offence to your hopes, and I really admire it, but you should have low expectations of happenning this year, if the author or an official page hasn't announced it yet it might not as well happen (but that is just me).