diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1df438990b..fabc6ba424 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -8,7 +8,8 @@
 
 - [Gen 3] Remove XIP support for accessing the external flash [#2302](https://github.com/particle-iot/device-os/pull/2302) [#2321](https://github.com/particle-iot/device-os/pull/2321)
 - Trigger a compiler error when a function returning a value does not do so [#2323](https://github.com/particle-iot/device-os/pull/2323)
-- [ESP32] Prevent long boot times of ESP32-based devices (mainly Argon) which may have originated after removing XIP support [#2327]((https://github.com/particle-iot/device-os/pull/2327))
+- [Argon] Cache ESP32 MAC address in persistent storage to improve boot-up times [#2327](https://github.com/particle-iot/device-os/pull/2327)
+- [Cellular] Add `CellularSignal::isValid()` and `CellularSignal::operator bool()` APIs [#2212](https://github.com/particle-iot/device-os/pull/2212)
 
 ### BUGFIXES
 
@@ -18,10 +19,12 @@
 - [B5 SoM / Tracker] Fixes external flash DFU definition on in bootloader to use 4KB sectors [399b8a0](https://github.com/particle-iot/device-os/pull/2321/commits/399b8a085898101adcf396ef03ef7bb9bbbf479c) [#2321](https://github.com/particle-iot/device-os/pull/2321)
 - Fix non-MBR-based bootloader updates [#2327]((https://github.com/particle-iot/device-os/pull/2327))
 
-
 ### INTERNAL
+
 - Add an integration test to validate network/cloud connection time SLOs [#2312](https://github.com/particle-iot/device-os/pull/2312) [#2320](https://github.com/particle-iot/device-os/pull/2320) [#2321](https://github.com/particle-iot/device-os/pull/2321)
 - [ci] Fix MarkupSafe weirdness [#2317](https://github.com/particle-iot/device-os/pull/2317)
+- Add `.bundleignore` for Workbench Device OS source code bundles [#2326](https://github.com/particle-iot/device-os/pull/2326)
+- Manage GCC dependencies with `.workbench/manifest.json` [d94f08030](https://github.com/particle-iot/device-os/commit/d94f0803068026d0b2aa0af426ba80c8b62299c7)
 
 ## 2.1.0
 
diff --git a/build/release.sh b/build/release.sh
index f8c9882f1d..cbb5af2d9b 100755
--- a/build/release.sh
+++ b/build/release.sh
@@ -1,7 +1,7 @@
 #!/bin/bash
 set -o errexit -o pipefail -o noclobber -o nounset
 
-VERSION="2.1.0"
+VERSION="2.2.0-rc.1"
 
 function display_help ()
 {
diff --git a/build/version.mk b/build/version.mk
index e7f9b43e87..3911fcb4f8 100755
--- a/build/version.mk
+++ b/build/version.mk
@@ -1,7 +1,7 @@
-VERSION_STRING = 2.1.0
+VERSION_STRING = 2.2.0-rc.1
 
 # PRODUCT_FIRMWARE_VERSION reported by default
 # FIXME: Unclear if this is used, PRODUCT_FIRMWARE_VERSION defaults to 65535 every release
-VERSION = 2101
+VERSION = 2200
 
 CFLAGS += -DSYSTEM_VERSION_STRING=$(VERSION_STRING)
diff --git a/modules/shared/system_module_version.mk b/modules/shared/system_module_version.mk
index 185ef77be0..a120cd0307 100644
--- a/modules/shared/system_module_version.mk
+++ b/modules/shared/system_module_version.mk
@@ -1,6 +1,6 @@
 # Skip to next 100 every v0.x.0 release (e.g. 108 for v0.6.2 to 200 for v0.7.0-rc.1)
 # Bump by 1 for every prerelease or release with the same v0.x.* base.
-COMMON_MODULE_VERSION ?= 2101
+COMMON_MODULE_VERSION ?= 2200
 SYSTEM_PART1_MODULE_VERSION ?= $(COMMON_MODULE_VERSION)
 SYSTEM_PART2_MODULE_VERSION ?= $(COMMON_MODULE_VERSION)
 SYSTEM_PART3_MODULE_VERSION ?= $(COMMON_MODULE_VERSION)
diff --git a/system/inc/system_version.h b/system/inc/system_version.h
index a54aad696c..5b5afe0272 100644
--- a/system/inc/system_version.h
+++ b/system/inc/system_version.h
@@ -169,7 +169,8 @@ extern "C" {
 #define SYSTEM_VERSION_v201         SYSTEM_VERSION_DEFAULT(2, 0, 1)
 #define SYSTEM_VERSION_v210RC1        SYSTEM_VERSION_RC(2, 1, 0, 1)
 #define SYSTEM_VERSION_v210         SYSTEM_VERSION_DEFAULT(2, 1, 0)
-#define SYSTEM_VERSION SYSTEM_VERSION_v210
+#define SYSTEM_VERSION_v220RC1      SYSTEM_VERSION_RC(2, 2, 0, 1)
+#define SYSTEM_VERSION SYSTEM_VERSION_v220RC1
 
 /**
  * Previously we would set the least significant byte to 0 for the final release, but to make
@@ -303,6 +304,7 @@ extern "C" {
 #define SYSTEM_VERSION_201
 #define SYSTEM_VERSION_210RC1
 #define SYSTEM_VERSION_210
+#define SYSTEM_VERSION_220RC1
 
 typedef struct __attribute__((packed)) SystemVersionInfo
 {