Amazon is pushing out a new firmware update for every Kindle released from 2013 and onwards. If you love reading e-books there is more font sizes than ever before—and five levels of boldness—for whichever font you choose to read with. In addition to the Opendyslexic font, Amazon has just added a new feature to invert black and white on the display, which is useful if you have light sensitivity. Finally there is a new Ragged Right Alignment feature that allows you to read using left-aligned (ragged right) text.
This firmware update has the version number 5.8.11 and Amazon has stated that it will be available sometime today or tomorrow. Your Kindle will automatically update itself sometime in the next week or so, but if you simply cannot wait you can hit refresh on their firmware page.