+* LyX now uses the parskip package for vertical paragraph separation. Since the
+ output differs from the previous (sub-optimal) approach which applied paragraph
+ separation to sections, lists etc. as well, existing documents
+ are converted to use preamble code that maintains the previous layout.
+ The downside is that the workarea looks as if paragraph indendation rather
+ than paragraph separation was used (output is correct). We encourage you
+ to try if the new layout suits you, remove the respective preamble code
+ and re-set the paragraph separation to use the new layout.
+
+* Autotools monolithic build option for building LyX binaries was removed,
+ for compilation speedup use parallel building on multiple cores instead.
+
+* Several ttf fonts (esint10.ttf, stmary10.ttf, wasy10.ttf) were changed
+ to reflect the fact that newer Qt libraries do not support displaying certain
+ codepoints anymore (bug #8493, #10161).
+ Distribution packagers need to repack those font files in case they are
+ delivering the fonts as a separated package dependent from core LyX
+ in order to display correctly math symbols like \oint.
+
+ Also note, that while it is still possible to compile LyX against Qt 4
+ these math symbols will not be displayed correctly anymore on Qt 4.