It's official now, Philippe Makowski is the maintainer of Firebird packages for Fedora and Epel (Centos and RHEL packages). Firebird packages get pushed into the official Fedora repositories so the good news is that Firebird users can get Firebird 2.1.2 directly from there. Philippe's blog

Flamerobin and Kinterbasdb (the Python driver for Firebird) will follow soon, as will the PHP module.