This is a really big milestone and congratulations are well-deserved by all Hindi wikipedians.
It also lays the platform for a deeper expansion of participation and quality. That's actually one of the things that I would like India Programs to focus on - given the sheer number of Hindi speakers. ...If there are any thoughts, please do share them on this mailing list or feel free to write to me directly or google chat me on [hidden email]
Hisham Mundol India Programs - Wikimedia Foundation