According to the news, Tencent prepare own Android 4.0 based custom ROM for expanding their QQ or Weibo users.
Its product page is here, but now is a phase of internal beta, so we cannot access this site...
Before Tencent released "QQ smartphone" with Chinatelecom or HTC, but there are rumors that its sales is not so good... So they may think it's better that develop customized OS to deliver popular Android devices.
Now its details don't become clear, so if its more information will be available, I will update this article :)