The comments in this thread had me very worried about the new interface, but I can see the reason behind developing something that's optimized for tablets. A lot of people will be reading on tablets and accessing their libraries with them in the future.
I'm not a fan of the book covers overwhelming the display, especially since the title and author names are badly cropped, but I do like having more books show per page (less scrolling). I really hope Overdrive can fix the title/author issue, moving the wish list ribbon up into the bottom left corner of the book cover would give more room and adding an additional line for the book title as well as making the font slightly smaller would help tremendously.
It took some trial and error to figure out, but I've been able to do the advanced searches I want, so no complaints there. The log in glitch seems to be fixed, I haven't had to log in a second time to sign out every single book recently.