diff --git a/NEWS b/NEWS
index 8d4389fc6..73dcef083 100644
--- a/NEWS
+++ b/NEWS
@@ -1,3 +1,65 @@
+Overview of changes leading to 6.0.0
+Friday, December 16, 2022
+====================================
+- A new API have been added to pre-process the face and speed up future
+ subsetting operations on that face. Provides up to a 95% reduction in
+ subsetting times when the same face is subset more than once.
+
+ For more details and benchmarks, see:
+ https://github.com/harfbuzz/harfbuzz/blob/main/docs/subset-preprocessing.md
+
+ (Garret Rieger, Behdad Esfahbod)
+
+- Shaping have been speedup by skipping entire lookups when the buffer contents
+ don't intersect with the lookup. Shows up to a 10% speedup in shaping some
+ fonts. (Behdad Esfahbod)
+
+- A new experimental feature, “Variable Composites” (enabled by passing
+ -Dexperimental_api=true to meson), is also featured in this release.
+ This technology enables drastic compression of fonts in the Chinese,
+ Japanese, Korean, and other writing systems, by reusing the OpenType Font
+ Variations technology for encoding “smart components” into the font.
+
+ The specification for these extensions to the font format can be found in:
+ https://github.com/harfbuzz/boring-expansion-spec/blob/glyf1/glyf1.md
+
+ A test variable-font with ~7160 Hangul syllables derived from the
+ NotoSerifKR-VF font has been built, with existing OpenType technology, as
+ well as with the new Variable Composites (VarComposites) technology. The
+ VarComposites font is over 90% smaller than the OpenType version of the font!
+ Both fonts can be obtained from the “smarties” repository:
+ https://github.com/behdad/smarties/tree/3.0/fonts/hangul/serif
+
+ When building HarfBuzz with experimental features enabled, you can test
+ the “smarties” font with a sample character like this:
+
+ $ hb-view butchered-hangul-serif-smarties-variable.ttf -u AE01 --variations=wght=700
+
+ (Behdad Esfahbod)
+
+- The HarfBuzz subsetter can now drop axes by pinning them to specific values
+ (also referred to as instancing). There are a couple of restrictions
+ currently:
+
+ - Only works with TrueType (“glyf”) based fonts. “CFF2” fonts are not yet
+ supported.
+ - Only supports the case where all axes in a font are pinned.
+
+ (Garret Rieger, Qunxin Liu)
+
+- Miscellaneous fixes and improvements.
+
+ (Behdad Esfahbod, Christoph Reiter, David Corbett, Eli Schwartz, Garret
+ Rieger, Joel Auterson, Jordan Petridis, Khaled Hosny, Lorenz Wildberg,
+ Marco Rebhan, Martin Storsjö, Matthias Clasen, Qunxin Liu, Satadru Pramanik)
+
+
+- New API
++hb_subset_input_pin_axis_location()
++hb_subset_input_pin_axis_to_default()
++hb_subset_preprocess()
+
+
Overview of changes leading to 5.3.1
Wednesday, October 19, 2022
====================================
diff --git a/configure.ac b/configure.ac
index f2480c349..abe86ede5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,6 +1,6 @@
AC_PREREQ([2.64])
AC_INIT([HarfBuzz],
- [5.3.1],
+ [6.0.0],
[https://github.com/harfbuzz/harfbuzz/issues/new],
[harfbuzz],
[http://harfbuzz.org/])
diff --git a/docs/harfbuzz-docs.xml b/docs/harfbuzz-docs.xml
index 652a5e470..2d2827a66 100644
--- a/docs/harfbuzz-docs.xml
+++ b/docs/harfbuzz-docs.xml
@@ -117,6 +117,7 @@
API Index
Index of deprecated API
+ Index of new symbols in 6.0.0
Index of new symbols in 5.3.0
Index of new symbols in 5.0.0
Index of new symbols in 4.4.0
diff --git a/meson.build b/meson.build
index 3391fc799..cc802f2f5 100644
--- a/meson.build
+++ b/meson.build
@@ -1,6 +1,6 @@
project('harfbuzz', 'c', 'cpp',
meson_version: '>= 0.55.0',
- version: '5.3.1',
+ version: '6.0.0',
default_options: [
'cpp_rtti=false', # Just to support msvc, we are passing -fno-exceptions also anyway
'cpp_std=c++11',
diff --git a/src/hb-subset-input.cc b/src/hb-subset-input.cc
index 38c38c10d..42434ae0e 100644
--- a/src/hb-subset-input.cc
+++ b/src/hb-subset-input.cc
@@ -408,7 +408,7 @@ hb_subset_input_get_user_data (const hb_subset_input_t *input,
*
* Return value: `true` if success, `false` otherwise
*
- * Since: REPLACEME
+ * Since: 6.0.0
**/
HB_EXTERN hb_bool_t
hb_subset_input_pin_axis_to_default (hb_subset_input_t *input,
@@ -435,7 +435,7 @@ hb_subset_input_pin_axis_to_default (hb_subset_input_t *input,
*
* Return value: `true` if success, `false` otherwise
*
- * Since: REPLACEME
+ * Since: 6.0.0
**/
HB_EXTERN hb_bool_t
hb_subset_input_pin_axis_location (hb_subset_input_t *input,
@@ -470,7 +470,7 @@ hb_subset_input_pin_axis_location (hb_subset_input_t *input,
*
* Returns: a new #hb_face_t.
*
- * Since: REPLACEME
+ * Since: 6.0.0
**/
HB_EXTERN hb_face_t *
diff --git a/src/hb-version.h b/src/hb-version.h
index 8d6ec66e1..1070262a3 100644
--- a/src/hb-version.h
+++ b/src/hb-version.h
@@ -41,26 +41,26 @@ HB_BEGIN_DECLS
*
* The major component of the library version available at compile-time.
*/
-#define HB_VERSION_MAJOR 5
+#define HB_VERSION_MAJOR 6
/**
* HB_VERSION_MINOR:
*
* The minor component of the library version available at compile-time.
*/
-#define HB_VERSION_MINOR 3
+#define HB_VERSION_MINOR 0
/**
* HB_VERSION_MICRO:
*
* The micro component of the library version available at compile-time.
*/
-#define HB_VERSION_MICRO 1
+#define HB_VERSION_MICRO 0
/**
* HB_VERSION_STRING:
*
* A string literal containing the library version available at compile-time.
*/
-#define HB_VERSION_STRING "5.3.1"
+#define HB_VERSION_STRING "6.0.0"
/**
* HB_VERSION_ATLEAST: