Gentlemen, start your downloading! Upon docking my iPhone I nearly spewed Coke Zero through my nostrils when a message popped up alerting me to a firmware update for iPhone, version 1.0.1. According to the documentation this is almost entirely a bug fix and little else. Correction It's a security fix for several recently published Safari vulnerabilities.
Bummer. I was expecting some value added goodness.
UPDATE: Apple has posted documentation for this update here.
UPDATE 2: Since installing this update the Mail app has become alarmingly unstable. It seems to freeze up often. On the plus side IMAP folder support appears to have improved, allowing full server-side folder browsing. Nice, but I can do without the crashy crashy.