iPhone and iPod touch OS 3.1 Available for Download [Downloads]

iPhone/iPod touch only: Apple today announced an update to iPhone OS 3.1 today, introducing a new 'Genius' recommendation feature for the App Store. bug fixes and performance boosters, and several other small but worthwhile updates.
It's also added a Ringtone section to the App Store on your device (for a whopping $1.29 a pop—which is why we recommend making them yourself [Windows guide; Mac guide]). Other than that, Apple's not promising a lot from this update other than support for the newly released iTunes 9, its new features (e.g., Genius Mixes), and a few other nice tweaks. Below is a quick look at some of the other most notable updates from the release notes:

• Save video from Mail and MMS into Camera Roll (We'll believe the MMS saving when we finally see MMS)
• Option to 'Save as new clip' when trimming a video on iPhone 3GS
• Better iPhone 3G Wi-Fi performance when Bluetooth is turned on
• Paste phone numbers into the Keypad
• Anti-phishing features in Safari
• Improved Exchange calendar syncing and invitation handling

Hit up iTunes, plug in your device, and click the Check for Updates button to get started on the 240+MB download.