After writing earlier this month that UPower 1.0 is nearing
, UPower 0.99.0 has been released this morning.
UPower 0.99.0 has major API changes over UPower 0.9 and new features like new properties for all devices, a DisplayDevice composite battery, enforcing of critical battery policy on the daemon side, many bug-fixes, and some features have also been dropped. There's also support for Bluetooth input device batteries
More details on UPower 0.99.0 are available from its Git commit