You can download it here.
Highlights of this beta include: * warmer colors, down to 2700K * f.lux for Philips Hue * support for calibrated monitors * movie mode (partially disable to watch a movie) * disable until morning * screen warms as you dim it * fixes for Intel chipsets * fixes for Windows 7+
Check it out and let us know what you think.
fixes:
If you have f.lux installed, it will update automatically.
fixes:
If you have an older version, you can quit and relaunch the f.lux app to get the new update.