Understanding Change Packages
There a four types of Change Packages.
Update Package
Update change packages contain updates and enhancements selected by the customer, along with the pre and post requisites. There are multiple ways for customers to select which updates to apply.
Upgrade Package
Upgrade packages are used when a customer upgrades to application 9.2. The Upgrade change package will contain the Application Upgrade template from the current release to 9.2. Upgrades also require a Required for Upgrade package which contains all of the bugs required for upgrade
Tools Delta Package
Tools Delta change packages are used after a PeopleTools upgrade and contain attributes or objects that were stripped away when the updates were applied in the old release.
Translations Delta Package
Translation Delta packages contain languages and translation fixes.