K4 v6: New notes
The inline notes of InCopy CS3 are useful for editorial communications but they have never been useful for editorial/art communications because they are not very visible in InDesign. The new sticky notes feature of K4 v6 are very exciting. The ability for editors to put in and read notes in Layout view will help with communication with designers. Plus designers can use these notes to ask question to editors.
The inline notes are still there and will continue to be used by editorial staff, but the new layout notes are exciting.