AE10 will ultimately replace Nexus and Odystar, but the initial versions don't have a lot of Nexus or Odystar functionality. As @Repro_is_still_alive states, currently the only Nexus-like functionality is ArtPro file support, which is still limited. AE10 workflows can now be built using an Odystar-like user interface in the Pilot. Although it is not highly intuitive, it is certainly better than the old way of building workflows in Pilot. Pilot will be the new user interface for Nexus and Odystar users, and the timeline for AE10 having complete Nexus/Odystar PDF functionality is not until sometime in 2011. It is not clear whether AE10 will have any support for Nexus raster PSTI files but there is user pressure to come up with a solution for this, so we'll have to see. The promise of AE10 to Nexus and Odystar users is the ability to automate workflows and processes even further, especially through database integration. The problem is, for those not interested in these high-end and complex capabilities, AE10 may dictate a great deal of overhead regardless of whether you want it or not.