I just patched a fix for a small grammar error in the instructions at the top of the Permalinks Settings page in WordPress (#25210). It fixes a sentence that Matt Mullenweg wrote in 2004 and hasn’t been touched since. I can’t believe no one noticed this over the past 9 years and millions of WordPress installs.

Needless to say, Sergey Biryukov committed the fix within a couple of hours. So, I guess that’s my contribution to WordPress 3.7. I’ve already made more substantial contributions  (both in code and discussion) to WordPress 3.8 via Twenty Fourteen, but I don’t expect to touch much else in 3.7 since it doesn’t address any UI components.