Type=MimeType is deprecated as there is a new standard for this now, see the Shared MIME-info Database specification for more information. In consequence the Keys Patterns (various file name extensions associated with the MIME type) and DefaultApp (the default application associated with this MIME type) are also deprecated.

Using .kdelnk instead of .desktop as the file extension is deprecated.

Using [KDE Desktop Entry] instead of [Desktop Entry] as header is deprecated.

The Encoding key is deprecated. It was used to specify whether keys of type localestring were encoded in UTF-8 or in the specified locale. Possible values are UTF-8 and Legacy-Mixed. See Appendix D, The Legacy-Mixed Encoding (Deprecated) for more details.

Deprecated Exec parameters: %m (the mini-icon associated with the desktop entry, this should be expanded as two parameters, --miniicon and the content of the MiniIcon field, it can also be ignored by expanding it to no parameters).

Deprecated keys: MiniIcon (small icon for menus, etc.), TerminalOptions (if the program runs in a terminal, any options that should be passed to the terminal emulator before actually executing the program), Protocols, Extensions, BinaryPattern, MapNotify.

The SwallowTitle and SwallowExec keys are deprecated. The SwallowTitle key is of type localestring and specifies the title of the window if is swallowed onto the panel. The SwallowExec key is of type string and specifies the program to exec if swallowed app is clicked.

Historically some booleans have been represented by the numeric entries 0 or 1. With this version of the standard they are now to be represented as a boolean string. However, if an implementation is reading a pre-1.0 desktop entry, it should interpret 0 and 1 as false and true, respectively.

Historically lists have been comma separated. This is inconsistent with other lists which are separated by a semicolon. When reading a pre-1.0 desktop entry, comma separated lists should continue to be supported.