Hi
Exports from the Sentence Collector are automatically done every Friday. As per right now there are 4272 exported sentences. Sentence Collector currently has 5346 sentences, so the remaining sentences would be exported next Friday.
Once sentences are exported they get added to the Common Voice website. These releases happen every second Wednesday: https://github.com/common-voice/common-voice#upcoming-releases
I will adjust the Sentence Collector export to be early Wednesday mornings UTC to make sure we have as many sentences in those releases as possible. This means that with the next release Uyghur will be enables for voice contributions.