FYI ...

Update Compare the Informix Version 11 editions

[25 October 2010: This article has been updated to include features and functionality in Informix 11.70, released in October, 2010. The comparison table has been updated to include Informix 11.70 features and functions.--Ed.]

http://www.ibm.com/developerworks/data/library/techarticle/dm-0801doe/index.html

Kind regards,
Vadim Golovsky.