It has been released as 1.5.0-BETA. The reason? Myself and my testers all agree that it offers nothing more than 1.4.4. It performs exactly the same. But, since popular demand dictated that people really wanted it, I released it anyway. The reason I stuck the beta tag on there is because I don't want everyone assuming its an upgrade and moving to it. Install it if you want to try it out, but just don't expect a huge difference from 1.4.4.
Also, being an Asian rom, it only has Locale support for Asian languages and English.
To recap - for the time being the MAIN rom is to be considered 1.4.4. The KC2 build is out there for people to experiment with, give feedback, etc...but in all honesty it doesn't offer any major upgrade from the 2.2 firmwares.
EDIT for Bartito: the stock wpa_supplicant is attached