X-Git-Url: https://git.lyx.org/gitweb/?a=blobdiff_plain;ds=sidebyside;f=UPGRADING;h=74bb0127da12dd110345ecba121037e595484f1c;hb=55a3dd7b346d29a52ba305a4558e9e380ef50f47;hp=6080d07fee64b8ec823c0f3705070b9b8a1f23a4;hpb=d0a2ff824d3f6e0425d0b16bd0aeb7b2c4f247d3;p=lyx.git

diff --git a/UPGRADING b/UPGRADING
index 6080d07fee..74bb0127da 100644
--- a/UPGRADING
+++ b/UPGRADING
@@ -1,15 +1,26 @@
-How do I upgrade my existing LyX system to version 2.0.x?
+How do I upgrade my existing LyX system to version 2.1.x?
 ---------------------------------------------------------
 
+* Upgrading from LyX 2.0.x:
+
+Python version >=2.4 is now required.
+
+Python version >3.0 is still not yet supported.
+
 * Upgrading from LyX 1.6.x:
 
 The format of preference and session files has changed. LyX 2.0.x is
 able to read old files but will save them in the new format.
 
-The format of layout files has changed but, as before,
-layout2layout.py will convert older versions to the new format
-automatically.
+The format of layout files has changed but, as before, layout2layout.py
+will convert older versions to the new format automatically.
+
+The syntax of the languages file has been changed. If you use a
+modified languages file, you will need to adapt it to the new syntax.
 
+There has been a large change in how Flex insets are named.
+When exporting back to 1.6.x format user-defined flex insets will not
+be properly reverted. See RELEASE-NOTES for details.
 
 * Upgrading from LyX 1.5.x:
 
@@ -236,4 +247,4 @@ babel). If you relied, on babel being loaded before your own
 definitions, you can add an extra "\usepackage{babel}" statement at
 the beginning of your preamble.
 
-http://bugzilla.lyx.org/show_bug.cgi?id=315
+http://www.lyx.org/trac/ticket/315