Update with 1.2.0 release notes
Signed-off-by: Fabio Utzig <utzig@apache.org>
diff --git a/docs/release-notes.md b/docs/release-notes.md
index 69b6b1a..a631359 100644
--- a/docs/release-notes.md
+++ b/docs/release-notes.md
@@ -3,6 +3,38 @@
- Table of Contents
{:toc}
+## Version 1.2.0
+
+The 1.2.0 release of MCUboot brings a lot of fixes/updates, where much of the
+changes were on the boot serial functionality and imgtool utility. There are
+no breaking changes in MCUBoot functionality, but some of the CLI parameters
+in imgtool were changed (either removed or added or updated).
+
+### About this release
+
+- imgtool accepts .hex formatted input
+- Logging system is now configurable
+- Most Zephyr configuration has been switched to Kconfig
+- Build system accepts .pem files in build system to autogenerate required
+ key arrays used internally
+- Zephyr build switched to using built-in flash_map and TinyCBOR modules
+- Serial boot has substantially decreased in space usage after refactorings
+- Serial boot build doesn't require newlib-c anymore on Zephyr
+- imgtool updates:
+ + "create" subcommand can be used as an alias for "sign"
+ + To allow imgtool to always perform the check that firmware does not
+ overflow the status area, `--slot-size` was added and `--pad` was updated
+ to act as a flag parameter.
+ + `--overwrite-only` can be passed if not using swap upgrades
+ + `--max-sectors` can be used to adjust the maximum amount of sectors that
+ a swap can handle; this value must also be configured for the bootloader
+ + `--pad-header` substitutes `--included-header` with reverted semantics,
+ so it's not required for firmware built by Zephyr build system
+
+### Known issues
+
+None
+
## Version 1.1.0
The 1.1.0 release of MCUboot brings a lot of fixes/updates to its