-* LyX is not yet supposed to work with Qt5. It is advised to compile and
- run LyX against Qt 4.8.x. On Windows Qt 4.8.6 or newer is advised.
+* LyX 2.2.0 and the following 2.2.x releases will continue to work well with
+ Qt 4.5 (and later Qt 4.x) but will also support Qt 5.6, which brings some
+ advantages most notably for users with HiDPI displays. Note that if you
+ compile LyX with a Qt 5 release before 5.6 you are likely to run into
+ several regressions with respect to Qt 4.x. See #9215 for a list of bugs
+ related to compiling LyX with different versions of Qt.