Gail Simone, the writer of Batgirl since the comic was rebooted as part of DC Comics' New 52 relaunch, said on Twitter today that she will no longer be writing the title.
"On Wednesday of last week, new Batgirl editor Brian Cunningham informed me by email that I was no longer the writer of Batgirl," Simone said. "It is baffling and sad, I will probably have a statement later today or maybe tomorrow. But I want to give huge, huge thanks to the other creators in the bat-offices, and editors Bobbie Chase and @yourpallsmitty, champions all. And the biggest thank you of all to you guys for supporting this book so hugely and making it a commercial and critical success. I honestly don't have the words right now to thank you all. I'm pretty choked up and it's all gratitude, not bitterness. I am very proud of what we accomplished with Batgirl and it was an honor to get to write Barbara Gordon again. Love that dame."
Simone has a long history with the character. In addition to writing the New 52 relaunch title that saw Barbara Gordon back in the familiar tights, Simone also wrote the character for years in Birds of Prey before the relaunch, back when Gordon was the wheelchair-bound Oracle. No word yet on what issue will be Simone's last; presumably it will be issue #17, which was solicited for February. March solicitations I believe are due to be released tomorrow.
This also leaves Simone without a project in the DCU; she was the co-writer of Fury of Firestorm until issue #7, when Joe Harris replaced her on the title. She and her Secret Six collaborator Jim Calafiore are working together on a creator-owned project called Leaving Megalopolis, which had a successful Kickstarter campaign earlier this year.