Will there ever be a novel based on Albus Dumbledore?

Ever since I started reading the series I always wanted to read something on those lines. Tom Riddle was explained in book six,and Hagrid being acquainted to Voldemort was briefly exposed in both Sorcerer's Stone and Chamber Of Secrets. Most of my favorite characters are from house Slytherin. If JK Rowling wanted to really make an impact by outing a character it should had been Sirius. He had very profound feelings for James Potter. When he got disowned,Sirius moved in with James'. family. I personally would have had seen an Albus who lived happily married to Minerva and had a daughter named after his late sister. If the elder wand were to be hidden inside Godric's sword that would had explained the power behind it. Since wands are loyal to only their bearers it would make a ton of sense that it would only worked in the hands of a true Gryffindor. But the series is over and I truly regret that is not proper for children anymore. It is truly the end of the Potter series.