I voted it as a bit buggy. The issue with bold and italics on sideloaded epubs is a pretty significant bug in my opinion. From what I understand it will be fixed in the next version though.
Other than that this release has been fantastic, especially the ability for footnotes for sideloaded epubs. I know that is a feature that I sorely missed back on my Kobo wifi.
To the Kobo developers: keep up the great work!