Blog Post
The component grouping should be a big leap. It's really time-consuming to find the right components right now and some even aren't listed. The 13.10 changes should expecially help admins and developers new to the Lithium platform.
The hidden gem for me here is definitely the "Content Filter that included UTF-8 characters requiring 4 or more bytes" - a problem we ran into when fighting recent waves of spam. Really looking forward to get 13.10 deployed.