How do I Create the Upgrade Task Sequence in the SCCM Technical Preview?
To create the Upgrade Task Sequence in the SCCM Technical Preview use the To create a task sequence that installs an existing image package procedure from the Configuration Manager documentation. Select the Upgrade an operating system from an upgrade package option in the Create Task Sequence Wizard as the type of Task Sequence you want to create.
Once you’ve created the Task Sequence you can configure additional edits like steps uninstalling applications with known compatibility issues, or add post-processing actions to run after the upgrade to Windows 10 is successful.