Installing this update to hosts in my View 6.0.1 environment caused all provisioning of new linked clone machines to fail with "View Composer DiskFault: Disk customization failed due to an internal error" errors. Worked for almost four hours with VMware support (SR 15827422112) and finally just ended up reverting my hosts back to 3116895 (5.5 U3a) as my maintenance window was closing.
Hope this helps others avoid the problem.
Geoff