The hero header contains the same description for the main and meta sites. Here's the one for Meta Stack Overflow:
Meta Stack Overflow is a question and answer site for professional and enthusiast programmers. It only takes a minute to sign up.
This can easily confuse people who are new to the network, so I feel this should be changed to something meta specific. Perhaps re-use the text from the sidebar, that has a good description:
This site is intended for bugs, features, and discussion of Stack Overflow and the software that powers it. You must have an account on Stack Overflow to participate.