We predicted back in September 2012 the current trend of an accelerating growth noticing it was stronger than Facebook.
Now it is not anymore a prediction! According to Tencent, WeChat passes 300 million users. Please see below how the illustration they posted on Tencent Weibo:
Next step is reaching 400 million users before the month of June 2013. Even before that, we expect a new version of the application with additional features.