Antuan at the-ebook.org have built this version. This version is not intended to solve some issues with RC3 it is just interim version including engine update and some minor fixes.
It includes some rudementary stylus support - If you tap on the centre of the screen quick menu should appear. Tap on the left side of the screen should turn to the previous page and right side to the next page. Stylus navigation in the settings menu should work too.