• In the 'Find' dialog, search parameters can now be saved as profiles; the profiles can be accessed quickly via the main menu ('Find' -> 'Search Profiles') and the group context menu.
• Added search mode 'XPath expression' in the 'Find' dialog, which creates a KeePass 2.x XML DOM of the current database in memory and finds entries using the specified XPath expression.
• Added option 'History' in the 'Find' dialog, which includes history entries in searches.
• Added 'Help' button in the 'Find' dialog.
• Added auto-type matching option 'Consider similar dashes as identical' (in 'Tools' -> 'Options' -> tab 'Advanced', turned on by default).
• Added commands 'Copy Group (Encrypted)', 'Copy Group (Unencrypted)' and 'Paste Group' (in the menu 'Group' -> 'Data Exchange').
• When loading/saving a configuration file fails, an error message is displayed now, and in certain cases a backup of the configuration file is created (the path is mentioned in the error message).
• Added configuration option for saving the configuration (turned on by default).
• On the 'Security' tab page of the options dialog, two links have been added, which open help pages for experts and administrators.
• Added {TIMEOTP} placeholder, which generates a time-based one-time password (as specified in RFC 6238).
• Enhanced XML key file format (added hash that allows to verify the integrity of the key; values are now encoded using hexadecimal characters in order to improve the readability).
• Added command 'Print Key File Backup' (in 'File' -> 'Print').
• In the dialog that asks whether to print an emergency sheet, there is now an option 'Also print a key file backup' (on Windows), if the master key contains a key file.
• Added command 'Create Key File' (in 'Tools' -> 'Advanced Tools'), which shows a dialog for creating a new key file (random key) or for recreating a key file from a printed backup.
• Added Argon2id key derivation function.
• Added support for importing Dashlane 6.2039.0 JSON files.
• Dashlane and RoboForm import: domains are now mapped to HTTPS URLs (instead of HTTP URLs).
• Added option 'Use a different master key' in the import/export dialog (tab page 'Options').
• Added option 'Additionally export parent groups' in the import/export dialog (tab page 'Options').
• Added options 'Open exported file (with associated application)' and 'Show exported file (with file manager)' in the import/export dialog (tab page 'Options').
• The 'About' dialog now shows whether KeePass is currently running as 32- or 64-bit application.
• Plugins can now disable/enable specific Mono workarounds.
• Added workaround for Mono URL opening bug.
• Added workaround for Mono HTML document opening bug.

Improvements:

• Improved performance of certain searches.
• Various user interface improvements in the search dialog.
• Improved keyboard shortcut handling (e.g. Ctrl+Tab and Ctrl+Shift+Tab now also work when the quick search box is focused).
• The local configuration file is now loaded only if necessary.
• Improved performance of configuration saving.
• Changed default key file extension from 'key' to 'keyx'.
• Most key file dialogs now only show '*.keyx' and '*.key' files by default.
• When clicking the key file 'Browse' button in the master key creation dialog and selecting a file that is not an XML key file, KeePass now asks whether to use the file as key file anyway.
• Improved key file loading/saving error messages.
• Various user interface improvements in the import/export dialog.
• The import/export dialog does not accept relative file paths anymore.
• The import/export dialog now shows an error message when trying to export to multiple files.
• Removed indeterminate progress indicators while displaying the import/export dialog.
• Improved field to standard field mapping function.
• Moved command 'Empty Recycle Bin' directly below the 'Delete Group' command.
• Moved commands 'Print Group' and 'Export Group' into the 'Data Exchange' popup menu.
• Improved quality of some icons.
• Improved dialog banner caching.
• Improved performance of certain object collection operations.
• History entry UUIDs are now fixed automatically.
• Increased default value of Argon2 memory parameter.
• Improved task dialog parent determination.
• The setup program now installs KeePass into a folder in 'C:\Program Files' by default (i.e. without '(x86)' suffix; this is reasonable, because on a 64-bit operating system, KeePass runs as 64-bit application).
• Upgraded installer.
• Various UI text improvements.
• Various code optimizations.
• Minor other improvements.

Bugfixes:

• Search: regular expressions starting with a '-' are not treated as exclusions anymore.

• Fixed a bug that caused KeePass to hang when trying to read a configuration file that contains certain unsupported nodes.