The newest version of OS X, 10.8 - Mountain Lion is scheduled to be released sometime in July of 2012 by Apple.
Based on past experiences, we do NOT recommend users currently encrypted with PGP Whole Disk Encryption or SEE Full Disk Encryption for Macs upgrade to OS X 10.8 when made available by Apple.
Symantec is actively testing PGP WDE and SEE FDE against the 10.8 developer builds from Apple. We will continue testing against all developer builds from Apple and also against the official release from Apple.
As a reminder, you should not upgrade to 10.8 if you wish to continue to use WDE. If you must upgraded to 10.8, then please decrypt your disk prior to installing 10.8. Once on 10.8, please do not re-encrypt at this point in time.
Please check back to this blog for updates as they become available.
EDIT @ 2:16PM PST
Today Apple announced that Mountain Lion (OS X 10.8) will be available to its customers tomorrow, July 25th, 2012. As of this point in time, do not upgrade to 10.8 if you are encrypted with WDE. If you must upgrade to 10.8, then please decrypt your disk prior to installing 10.8. Once on 10.8, please do not re-encrypt at this point in time. I will update this posting as I receive more information from our development and QA teams.
Edit @ 11:55AM PST Aug 7, 2012
I've been informed by the engineering team a compatiable version of PGP WDE for Mac 10.8 (Mt. Lion) will be available in Q4 of this year. Please see this blog for updates to the availability of the compatiable version of PGP WDE.
Edit @ 1:22PM PST Sept 24, 2012
I'm pleased to announce that Mt. Lion is now officially supported for PGP WDE. The version of PGP WDE you must run needs to be 10.2.1 MP4. This is available for download via FileConnect. Please note that 10.2.1 MP4 only supports 10.8 and 10.8.1 of Mt. Lion. It does NOT support 10.8.2 at this time. The release notes are here: http://www.symantec.com/business/support/index?page=content&id=AL1353&utm_source=buffer&buffer_share=7a001
Edit @ 8:59AM PST Oct 17, 2012
I am pleased to anounce that PGP 10.2.1 MP4 has now been QA'd and qualified for use with OS X 10.8.2! For the latest compatibility matrix of PGP and OS X, please go here: http://www.symantec.com/business/support/index?page=content&id=TECH174563