Only 3 weeks until the Information on Demand (IOD) conference. I know that they say "What happens in Vegas, stays in Vegas", but if you attend any of the Informix sessions, you are going to want to bring home what you learned!
Search for "Informix" in the session preview tool to see a list of the lectures and labs that you can choose from. For example, one (or all!) of these labs might interest you:
IDX-1344A: How to use sharding to improve performance and availability of distributed applications
IDX-1381A: Speed-of-thought query response with Informix Warehouse Accelerator and new SQL enhancements in Informix 12.1
IDX-1467A: Comprehensive compression techniques using new features available in Informix 12.1
For more reasons to go to IOD 2013, check out Jerry Keesee's invitation.