Is this significant? It doesn't even look to me like there are any new features.
The fix for the write() bug alone is worth upgrading. It silently - but decisively - corrupts data on OS X[1].
[1] http://groups.google.com/group/nodejs/browse_thread/thread/c...
Disclaimer: I currently don't use Node.js but I cannot wait to try it out.
If there's any node devs here, kudos on the site! It looks even better usability-wise than jQuery's! I hope more dev aimed projects mimic it.
Although https is broken in git at the moment due to a rewrite