I am in charge of CSDN development team. We don't have a plan to make an English version yet as for now our focus is still on local open source community setup. Maybe one day when the situation is mature enough...
It is partly true. That's why CSDN tried to adopt a different strategy other than Github.
Quality and quantity of original open source projects in China are not good enough. As the 1st step, CSDN is trying to foster the culture. To have the IT giants, like Tencent onboard, is definitely helpful to attract more engineers to play some parts in the game.