Fix packs are not the most exciting topic to blog about, but they are a crucial part of any successful enterprise software implementation. On August 14, 2014, Cognos BI 10.2.1 Fix Pack 4 became available. As far as I can tell, this fix pack contains many code fixes and only one new feature: it is now possible to convert report pages to tabs in Report Studio. This is in contrast to Fix Pack 3, which had the usual amount of fixes plus a lengthy list of product enhancements, mostly around Dynamic Query Mode (DQM) and Dynamic Cube functionality.
Please tweet me to let me know if I missed anything important in Fix Pack 4.