+ As part of the transition to unicode, lyx2lyx (the scripts used for
+ converting back and forth between different versions of the lyx
+ files) converts old .lyx files, which may use a number of different
+ encodings, to UTF-8. This conversion depends on correctly
+ identifying the language of the text. There were previously some
+ edge-cases (insets embedded in different-language text type
+ scenarios) in which the language was incorrectly identified, which
+ caused some text to appear incorrectly after having upgraded from
+ older versions. This has now been fixed. Unfortunately, however, the
+ fix cannot be applied to files which have already been converted
+ past format 249. So if you have already converted your old files
+ (using a development version or release candidate), this fix won't
+ help, unless you still have the originals lying around (and haven't
+ yet made too many changes to the newer versions ;) ).
+
+Generally, it is probably wise to keep a backup of the old version of your
+files, at least until you are sure that the upgrade went smoothly (which it
+almost always will).
+
+* Languages/encodings and insets
+
+One of the bugs fixed in LyX 1.5.0 is that previously, there were certain
+specific cases in which the LaTeX generated did not correctly reflect
+language/encoding transitions in and around insets (footnotes, LyX notes).
+After much deliberation, it was decided not to change older files such that
+they will still reflect the old LaTeX output; rather, they will now correctly
+reflect the situation as it appears in the GUI. This means, however, that if
+you mangled the text in the GUI in the older versions, in order that it
+generate the correct LaTeX output, the LaTeX will now generate the mangled
+text. If this is problematic for you, please get in touch with us on the
+developers mailing list, we do have some possible solutions for this.
+
+The effects of this will be more pronounced for RTL (Hebrew, Arabic, Farsi)
+users -- though they affect users of other languages as well.
+
+* Floatflt in 1.2.x and older
+
+If you were previously (in LyX 1.1.x) using the floatflt paragraph
+option to wrap text around a figure, it was necessary to modify this
+for LyX 1.2.0 manually, as described in the manuals. The feature has
+been re-implemented as "Floating figure" inset in 1.3.0. Old files will
+be converted automatically, but you may want to convert the
+1.2.x-style ERT constructs with the native solution (see section 3.8
+of the Extended Features manual).
+
+* Babel changes since 1.2.x
+
+Since LyX 1.2.0, the babel package is loaded after the user-defined