+* Missing characters in the output are now reported as errors. This leads
+ to error reports for documents that compiled without error before.
+ However, the error was always present but went undetected!
+
+* Documents using Times fonts and containing Greek characters may now fail
+ to compile under pdflatex for users of MikTeX due to an automatically
+ half-installed "grtimes" package. A workaround in LyX was removed as it
+ stands in the way of alternative approaches (see #6469).
+
+* With LuaTeX, LyX now uses polyglossia instead of babel if the language
+ package option "Automatic" is selected. In order to use babel, select
+ "Always babel" instead. This may be needed if a document uses code that
+ is specific to babel.