You know what time it is! Developers get their lucky little hands on the newest beta for iOS 4.1. It weighs in at almost 600MB, and is available via the usual sources.
I’m hoping for a fix for the proximity sensor and bluetooth problems. However, it is telling that this arrives the day after a major security hole was exploited for jailbreaking purposes. This might fix the PDF problem.
If you’re a developer and have the new beta, tell us what’s new in the comments! We’d love to hear any tricks or tips you have.