Information in this thread.
Just so we all caught it...
Kindle Keyboard Software Update
Software Update Version 3.4
Version 3.4 is a brand new, free software update for Kindle Keyboard that includes:
Improved Font: We've improved the reading font to have more contrast and be more crisp.
Parental Controls: With the latest software update for Kindle Keyboard, parents can restrict access to the Experimental Web Browser, the Kindle Store, and Archived Items. While the Kindle Store and Archived Items are locked with Parental Controls, you can continue to buy books from a computer and send them to the Kindle wirelessly for a child to read.
Kindle Format 8: KF8 makes books look even better with support for author specified fonts and more book styling options.
Comic Books: Kindle Keyboard now supports comic books with Kindle Panel View. Supported titles can be purchased from the Kindle Store. Books open in Kindle Panel View by default (a view that allows you to read a comic book panel by panel).
Children's Picture Books: Kindle Keyboard supports children's picture books with Kindle Text Pop-Up. Supported titles can be purchased from the Kindle Store.
Whispersync for Voice: Now you can switch back and forth between reading and listening without losing your place. Whispersync for Voice will synchronize what you read on any Kindle platform device with Audible playback on Kindle Keyboard, Kindle Fire, or on Audible apps for iPhone and Android.
What Version do I have?
From the Home screen, press the Menu key and then select Settings.
On the Settings screen, your software version is shown at the bottom next to the page number.
If you see:
Version: Kindle 3.3, install 3.4
Versions prior to 3.1 (3.0.3, 3.0.2, 3.0.1, or 3.0), install 3.1, then 3.3, and then install 3.4.
Versions 3.1, 3.2., 3.2.1, install 3.3 and then install 3.4.
Version: Kindle 3.4, your Kindle Keyboard software is up to date.
Tip: Your serial number is listed under Device Info in the Settings page. From the Home menu, press the Menu key, and then select Settings.
Transfer software to your Kindle Keyboard: Turn your Kindle Keyboard on and connect it to your computer with the USB cable. Drag and drop the new update file from your computer onto the Kindle drive. Don't drop the file into one of the folders within the Kindle drive.
Monitor file transfer and disconnect: Check your file transfer progress to ensure that the file transfer to your Kindle Keyboard is complete before you disconnect. After the file has transferred successfully, eject the Kindle Keyboard to safely disconnect it from your computer. Disconnect the USB cable from both your Kindle Keyboard and your computer.
Start the software update: From the Home screen, press the Menu key, and then select Settings. Press the Menu key again, and then select Update Your Kindle. (This option will be grayed out if the most recent update has already been installed or if the file transfer was not successful.) Select Ok when prompted if you want to perform an update. Your Kindle Keyboard will restart twice during the update. After the first restart, you'll see the message "Your Kindle is Updating." The device will return to the Home screen once the update is finished.