6.6.10.579060 - Maintenance-R Thursday, March 30, 2023 Release Notes Maintenance Resident Inspired Improvements Groups now show recent chat when they first open up. See https://community.secondlife.com/blogs/entry/12652-coming-soon-to-a-viewer-near-you-group-chat-history/  for the details.
Now building with VS2022, future proofing the future.
Estate owners may now restrict scripted agents from entry. More details here: https://community.secondlife.com/blogs/entry/13061-new-feature-scripted-agent-estate-access/ 
Users with Windows Mouse Keys accessibility enabled will no longer have their mouse pointers jumping around randomly.
For those curious about their object permissions, Slam bits have made a triumphant return from the dead!
Find out more about slam bits here: https://wiki.secondlife.com/wiki/Debug_Permissions 
Users have been so good at causing crashes so we’ve become better at fixing them.
Said crash fixes are included here!
See below for more
Resolved Issues SL-19462  Maint R viewer has group chat history disabled & unconfigurableSL-19289  Create UI for Estate Floater - Block Scripted Agents from Estate/RegionBUG-233384  Scripts failing to receive rapid touch_start events under LL viewerSL-19205  BugSplat Crash: Second Life Release!virtual thunk to LLVivoxVoiceClient::removeObserver(LLVoiceClientStatusObserver*)(0)BUG-233280  Mouse Steering Broken in Recent UpdateBUG-233206  Movement control issue - due to typing language set in keyboard.SL-18985  [Win] Crash at std::basic_string::eraseSL-18823  Crash when using 'Create folder from selected'SL-18810  "Find Original" doesn't work if Item profile was previously selectedSL-18807  Viewer crashes when trying to purge item using 'Pick: Select settings' floaterSL-18801  Crash at LLPluginProcessParent::pollTick()SL-18800  BugSplat Crash: Second Life Release!LLPipeline::removeMutedAVsLights(LLVOAvatar*)(1779)SL-18799  BugSplat Crash #1133004: SecondLifeViewer!LLAgent::requestPostCapability(2917)SL-18786  Viewer updater sometimes shows up behind other windowsSL-18776  viewer - user search - Avatar picker feedback not updated when user search completely failsSL-18773  Crash at boost::filesystem::detail::directory_iterator_incrementSL-18713  BugSplat Crash: SecondLifeViewer!LLWindowWin32::handleCompositionMessage(4209)BUG-232912  Using "Find Original" in Recent inventory tab resets Recent tab filtersSL-18528  Previously cached MFA Token not cleared when Remember Password is unchecked in viewerSL-18492  Switch inventory script compiler default from LSO to monoBUG-232791  Avatar Render Settings: Sorting by "Date" column should sort by dateBUG-232776  At log in I see only a partial list of my friends online in local chat and in the consoleSL-18268  Viewer update to read group chat historyBUG-232651  "More info" link does not appear for certain languagesSL-18159  Windows Mouse Keys alt + left click causes the mouse pointer to jump around the screen.BUG-232605  Allow translation services to work in IM and group messagingSL-18101  MoaP Reset button should set the Current URL to the Home Page.SL-17761  Viewer presents any generic login failure as a 'Grid emergency'BUG-233090  Missing Reset Button on Display NamesBUG-232135  Viewer crash - pressing Escape whilst editing with camera moved and Outfits floater openSL-16534  The link of the object with no copy permissions is shown as attached to the right hand in the 'Objects' folder after dropping the object in-worldSL-12456  [OSX] BugSplat Crash: libsystem_kernel.dylib!__rmdirSL-12437  Avatar name tag wraps long namesSL-8294  Incorrect coordinates are presented in address bar when user is placed out of boundaries of regionBUG-929  Advanced permissions are not presented in Item profile that was opened from inventory