I know it's not identical to Stack Overflow, because at least one feature exists in SO but not in meta-SO: Clicking the total number of votes on a questions splits into positive and negative votes on SO, but not on meta-SO.
What is meta?
- Any Stack Exchange user can ask a question
- The community provides support, votes on ideas, and reports bugs
- Your voice helps shape the way Stack Exchange operates
It will once you have 1,000 reputation.
If you read the FAQ, that ability only is granted after you have 1,000 reputation.
If you look at the lower right-hand corner of the page, you can see the actual svn revision number.
Right now, they're both at the same revision (6801).