I've sideloaded this firmware to my Glo, I haven't tested it much but these two bug fixes are very welcome:
* KEPUB hyphenation: The problem of the hyphen being misplaced when the hyphenated word has trailing punctuation seems to have been fixed (e.g. everyw-here, is now hyphenated as every-where,)
* The EPUB line spacing problem described in
this post has been fixed.
My Glo now shows the Aura options in the Reading Settings for Pinch to adjust font size, and two-finger swipe to adjust brightness. They don't work of course, because it is not an Aura. (The firmware wasn't for the Glo, so I'm not complaining. :-)