The scope of data collection covers anything WeChat collects including identity information, credit card information, chat history, phone numbers, biometric information (voice, fingerprint, etc) and more. It would be safe to assume that all versions of WeChat is subjected to the same level of scrutiny.
Update: September 29, 2017
Tencent responded to the story with the following statement:
Unfortunately this fundamentally pro-privacy update was misinterpreted as an admission that we send all user data to the Chinese government. This is not and has never been the case. Our server to user messages are encrypted. In case of criminal investigations, we will provide certain information to law enforcement agencies when legally compelled to do so, which is in line with international practices.
More generally, we would like to emphasize the following points: