Update: Chad let's us know that Apple already has an iPhone 2.1 info page up on their website!

Boom! iPhone firmware 2.1 (5F136) weighing in at 237.8MB is now live and available via iTunes. We're downloading now. Will it fix 3G? App crash? Security holes? And will any tasty new features (or even hints of new features?) be hidden inside? Apple says:

iPhone version 2.1 contains many bug fixes and improvements, including the following: 

  • decrease in call set-up failures and call drops 
  • significantly improved battery life for most users 
  • dramatically reduced time to backup to iTunes 
  • improved email reliability, notably fetching email from POP and Exchange accounts 
  • faster installation of 3rd party applications 
  • fixed bugs causing hangs and crashes if you have lots of 3rd party applications 
  • improved performance in text messaging 
  • faster loading and searching of contacts 
  • improved accuracy of the 3G signal strength display 
  • repeat alert up to two additional times for incoming text messages 
  • option to wipe data after ten failed passcode attempts 
  • Genius playlist creation 

If you're downloading as well, please let us know what, if any, issues you encounter, and what delights you find therein!

(Thanks to Tim, justapps, Garret, and everyone else for sending this in!)