Amazon have just released a firmware update for the Kindle Keyboard (aka Kindle 3) which provides the Kindle Keyboard with support for Amazon's new KF8 ebook format that offers many advanced ebook formatting features.
It also includes updated fonts, and several other features of later Kindles.
I was beginning to think that Amazon were never going to release a firmware update for this model. I'm very pleased to be proved wrong.
UK (.co.uk) site
US (.com) site
From The Digital Reader