From Fedora Project Wiki
Indigo is the 2011 simultaneous release of Eclipse projects. This year there are 62 projects and 46 million lines of code making up the release! Fedora packages a sub-set of the simultaneous release along with a bunch of Eclipse plugins that are not hosted at eclipse.org and/or are not a part of the simultaneous release. This page tracks our updates to the Indigo versions, targetting Fedora 16.