After loading the latest update yesterday I find all my books in series are grouped under one icon like magazine subscriptions. One stacked icon for the Wheel of Time books, one for Pip and Flinx, one for the Dragon Tattoo trilogy, one for Fleet of Worlds, Retrieval Artist, Deathworld, Silent Planet, and so on. A neat feature, that I'd love to see on my NST.
I saw that, it's kind of cool, I hope that means better organization is coming for all devices.
My issue is that I wish I could put them into series myself. Quite a few series that I have aren't recognized as such at all, and several others will have two of the books in a trilogy grouped but not the third, and so on.