Yes, there has been a changelog posted:
Here are some taken from BlackBerryCool: Verizon BlackBerry Storm 9530 official OS 18.104.22.1688 plus changelog | BlackBerry Cool
* Significant improvements in rotation detection and screen painting have been introduced in this software. |
* Device displayed a white bar at the bottom of the screen after a rotation event.
* When setting a custom SMS tone for a single contact, this tone may playback unexpectedly for SMSxxx8217; received from other contacts.
* When swiping down the virtual keyboard in an MMS message the send and save draft icons did not appear as expected.
* When viewing an SMS there was no simple way to call the current user.
* Now the user can select the number from the Callback Number field or from the message body and call that number from the pop up menu.
* The delete prior function has the unwanted side-effect of triggering the compose email screen.
* The user cannot configure their profile settings to increase the number of alerts when being notified of an event such as incoming SMS or email.
* Previous software versions did not allow the user to increase the count of notifications (i.e. Beep 5 times when when I get an email and beep 3 times when I get an sms). In this software, this is now allowed with counts from 1-10.
* When trying to set a home screen background of a certain resolution (more specifically a resolution matching either the width or the height of the native resolution of the LCD) it may have appeared as a black screen.
* When trying to edit/create a folder, the virtual keyboard did not render to allow the user to enter the names of said folders.
* Intermittently, when streaming a video while doing a handover to 2G on a 3G network the video would stop playing.
* If you paused a video recording and then resumed, the icon state may not have reflected the current recording state.
* After recoding a video of a certain size (7M) the saved video may be corrupted and unplayable.
* During manual network selection, the radio buttons associated with the networks did not render as expected.
* When moving out of coverage your device display for no coverage may have been inconsistent.
* During voice calls, your device may have reset on a rare occasion.
* After viewing and accepting the End User Licensing Agreement of the App World application the application doesnxxx8217;t startup (fixes introduced in the latest version of App World).
* On some rare occasions, the device may reset on its own during a voice call or while idle.
* During an MTP side load of 16GB of music, the device would leak memory and stop the transfer at ~75%.
* During device full boot-up, the progress bar skips from 0% complete to ~66% complete instead of showing a gradual progression (Note: from 66% to 100% it does show a gradual progression).