Some Sybase PR about their latest release: Sybase Adaptive Server Enterprise 15.7 Boosts Performance and Lowers Cost of Managing Exploding Data Volumes
ASE 15.7 further reduces cost of operations by simplifying administration and enhancing system security, providing a database manager that remains easy to manage while protecting against intrusion. ASE 15.7’s online operations and extended diagnostic features increase data availability, optimize the data for application performance and quickly pinpoint bottlenecks to speed performance. Strong password encryption and single login profiles protect the database from unauthorized external access attempts and make it easier to manage large numbers of users.
Sybase 15.7 is quite a major update to 15.5, there are more details in the Sybase ASE 15.7 New Features guide.