diff --git a/.gitmodules b/.gitmodules
deleted file mode 100644
index ab5575f4a..000000000
--- a/.gitmodules
+++ /dev/null
@@ -1,3 +0,0 @@
-[submodule "cmake/corrosion"]
-	path = cmake/corrosion
-	url = https://github.com/corrosion-rs/corrosion.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 6fb45c6d2..462c22653 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,8 +1,9 @@
 cmake_minimum_required(VERSION 3.21.0)
 project(libchewing)
 
-set(LIBCHEWING_VERSION 0.5.1)
-set(PACKAGE_VERSION ${LIBCHEWING_VERSION})
+set(CMAKE_PROJECT_VERSION 0.6.0-rc.1)
+set(LIBCHEWING_VERSION ${CMAKE_PROJECT_VERSION})
+set(PACKAGE_VERSION ${CMAKE_PROJECT_VERSION})
 set(LIBCHEWING_BINARY_VERSION 1.0.0)
 set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 
@@ -81,7 +82,14 @@ option(USE_VALGRIND "Use valgrind when testing" true)
 
 option(WITH_RUST "Use rust implemented internals (experimental)" false)
 if(WITH_RUST)
-    add_subdirectory(cmake/corrosion)
+    include(FetchContent)
+    FetchContent_Declare(
+        Corrosion
+        GIT_REPOSITORY https://github.com/corrosion-rs/corrosion.git
+        GIT_TAG be76480232216a64f65e3b1d9794d68cbac6c690 # v0.4.5
+    )
+    FetchContent_MakeAvailable(Corrosion)
+
     corrosion_import_crate(MANIFEST_PATH Cargo.toml CRATES chewing CRATE_TYPES staticlib FEATURES capi)
     corrosion_import_crate(MANIFEST_PATH Cargo.toml CRATES chewing-tools)
     add_compile_definitions(WITH_RUST)
@@ -324,3 +332,10 @@ install(FILES ${ALL_INC} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/chewing)
 install(FILES ${PROJECT_BINARY_DIR}/chewing.pc
     DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
 install(TARGETS libchewing DESTINATION ${CMAKE_INSTALL_LIBDIR})
+
+
+set(CPACK_PACKAGE_CHECKSUM SHA256)
+set(CPACK_SOURCE_IGNORE_FILES "/out" "/\\\\..*")
+set(CPACK_SOURCE_GENERATOR TXZ)
+set(CPACK_SOURCE_PACKAGE_FILE_NAME libchewing-${CMAKE_PROJECT_VERSION})
+include(CPack)
\ No newline at end of file
diff --git a/NEWS b/NEWS
index 058189a10..7e18f9697 100644
--- a/NEWS
+++ b/NEWS
@@ -1,20 +1,63 @@
-What's New in libchewing GIT
+What's New in libchewing 0.6.0-rc.1 (UNRELEASED)
 ---------------------------------------------------------
 
-* New APIs:
-  - chewing_phone_to_bopomofo [ShengYenPeng]. #166
+This release contains many improvements and bug fixes. It's the first
+release since 2016. We have started a major rewrite in Rust so we expect
+to have more frequent releases in the following months.
+
+* Added
+  - New API chewing_phone_to_bopomofo to convert syllable in u16 to bopomofo
+    string [ShengYenPeng]. #166
+  - New API chewing_set_autoLearn and chewing_get_autoLearn can be used to
+    disable and enable new phrase auto learning. [Hiunn-hué] #261
+  - Add default config test for autoLearn option [Billy Su].
+  - Add Android platform support [hiroshiyui]. #408
+  - New chewing Rust crate can be downloaded from
+    [crates.io](https://crates.io/crates/chewing) [Kan-ru Chen]. #423
+  - Add several CMake presets for supported configurations [Kan-ru Chen]. #424
+
+* Changed
+  - Implement has_userphrase in testhelper with the public
+    chewing_userphrase_lookup API. [ShengYenPeng]. #223
+  - Updated HSU layout's JVC conversion to be more intuitive [Hiunn-hué]. #259
+  - Phrase auto learning now only triggers after committing [Hiunn-hué]. #260
+  - chewing_handle_CtrlNum now handles cursor better and has clearer error
+    message if there is nothing to be added to user phrase. [Hiunn-hué] #277
+  - chewing_handle_ShiftLeft and chewing_handle_ShiftRight now also displays
+    aux message for new user phrases added. [Hiunn-hué] #278
+  - Symbol used for full-width colon changed from ︰ (U+FE30) to ： (U+FF1A)
+    [school510587] #304
+  - Support cross compiling with qemu. [sgn] #333
+  - CMake minimum version changed to 3.21.0
+  - Rewrite chewing internal in Rust [Kan-ru Chen] #347 #378
 
-* Platform-specific
-  - Install instructions for Mac OS [Chocobo1].
+* Dictionary
+  -  Add new syllable ㄒㄩㄢ for 亘 [yan12125] #252 #253
 
-* Bug fixed:
-  - Unable to input some Bopomofos with ET26 layout [Hiunn-hué]. #235
+* Bug fixed
+  - Fix ChoiceEndChoice expression always true [Billy Su].
+  - Fix strncpy warning in hash.c [Bo-Cheng Jhan].
+  - Fix unable to input some Bopomofos with ET26 layout [Hiunn-hué]. #235
+  - Fix double free in userphrase-hash's TerminateUserphrase [cwlin]. #254
+  - Fix hash item offsett calculation in uhash [cwlin]. #255
+  - Fix ChoiceEndChoice expression always true [Billy Su]. #258
+  - Fix clearing bopomofo buffer after switching Chi-Eng mode [Hiunn-hué]. #268
+  - Fix chewing_handle_Space cannot input space with empty buffer [Hiunn-hué]. #274
+  - Fix a strncpy warning and use ARRAY_SIZE [school510587] #296
+  - Enhance chewing.py to support platforms with 64-bit pointer [cheese] #310
+  - Fix init_database to correctly read phrase frequency for sorting [yan12125] #334 #337
+  - Fix installation of data files [yan12125] #350
+  - Fix building shared library on all supported platforms [Kan-ru Chen] #375 #376
+  - Fix dvorak-qwerty symbol mapping [hiroshiyui] #407
   - prevent memory leak in error case of GetDefaultUserPhrasePath [Kuang-che Wu].
   - Fix PinYinData keySeq buffer overflow in PinYinInput() [Kuang-che Wu]. #238
   - Fix trying to allocate buffer of negative size [Kuang-che Wu].
   - Fix access violation due to negative cursor position [Kuang-che Wu].
   - Fix several buffer overflow. [ChangZhuo Chen]. #241 #242
 
+* Platform-specific
+  - Install instructions for Mac OS [Chocobo1].
+
 
 What's New in libchewing 0.5.1 (May 18, 2016)
 ---------------------------------------------------------
diff --git a/README.md b/README.md
index e205c548c..873059688 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,11 @@ as full open source efforts.
    - Coverity Scan: [![Coverity Scan Build Status](https://scan.coverity.com/projects/1273/badge.svg)](https://scan.coverity.com/projects/1273)
    - Codecov: [![codecov](https://codecov.io/gh/chewing/libchewing/graph/badge.svg?token=r1piKsG5uF)](https://codecov.io/gh/chewing/libchewing)
 
+libchewing releases can be verified with the following [minisign][] public key
+
+    RWRzJFnXiLZleAyCIv1talBjyRewelcy9gzYQq9pd3SKSFBPoy57sf5s
+
+[minisign]: https://jedisct1.github.io/minisign/
 
 ## History
 
diff --git a/cmake/corrosion b/cmake/corrosion
deleted file mode 160000
index be7648023..000000000
--- a/cmake/corrosion
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit be76480232216a64f65e3b1d9794d68cbac6c690
diff --git a/rsign.pub b/rsign.pub
new file mode 100644
index 000000000..837012198
--- /dev/null
+++ b/rsign.pub
@@ -0,0 +1,2 @@
+untrusted comment: minisign public key: 7865B688D7592473
+RWRzJFnXiLZleAyCIv1talBjyRewelcy9gzYQq9pd3SKSFBPoy57sf5s