For years, the Chinese emigration proposal was the proposal with more people committed than any other one, with a notice that This launch is on hold while we add the international features needed to make it functional for this community. Dates will be announced when available. Now it has been deleted. Not only that — but an area51 discussion question was also deleted. What's going on?
While it had an astounding number of committed users, it was also a very old proposal, and many of the folks that committed hadn't been seen in, well, more than quite some time. It had run out of steam, and we were not closer to being able to support it than we were when it started, even though we have made progress in other languages.
In order to consider a site in another language, Stack Overflow has to exist in that language first. While I really want to build a Chinese Stack Overflow, technical and political reasons stand to get in the way of that for at least the foreseeable future. Even then, we really wouldn't have the resources to spare for another Chinese site for quite some time.
I'll be writing an "International State Of The Stack" on Monday at some point, going over what we've done, what we're going to do, and our plans after Spanish (which we're getting started on next week).