Not a soak test, it was a maintenance update (9.18.79.XT926) there is a thread post on this which includes the details in an email.
(IF you are rooted, don't accept the update.)
The update includes SMS bug fixes, GPS enhancement, random reboot fixes and more. The update is also including a Google Security Patch.
The RAZR HD is receiving the following changes:
The update is 50MB in size.
- New versions of Backup Assistant, SMARTACTIONS
GPS has been enhanced for better reliability
Random power cycle (reboots) and resets have been mitigated
Data Metering now offers categorized data usage for more accurate reading
Connectivity when using [COLOR=#737373 !important][COLOR=#737373 !important]Bluetooth[/COLOR][/COLOR] has been improved
SMS from email notification will be displayed correctly when using Circle Widget app
[COLOR=#737373 !important][COLOR=#737373 !important]SMS [COLOR=#737373 !important]messages[/COLOR][/COLOR][/COLOR] will be correctly displayed once they're read
Security has been improved and added to Google Security Patches
Support for VMware Horizon Mobile Switch Application has been added to provide a secure, separate environment for your business applications on the same device.