diff --git a/CHANGELOG.md b/CHANGELOG.md
index cb0e206ba..8e221145d 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # ChangeLog
 ## 1.12.0
+### New features
+- Add option to configure Data Encryption Key cache lifetime (`mongocrypt_setopt_key_expiration`)
+- Add opt-in retry behavior for KMS operations (`mongocrypt_setopt_retry_kms`)
 ### Removed
 - libmongocrypt is no longer published in the MongoDB package repository for RHEL 6. libmongocrypt may instead be built from source on RHEL 6, but support for RHEL 6 will be dropped in a future release.
 
diff --git a/README.md b/README.md
index b6ce96a0e..651694602 100644
--- a/README.md
+++ b/README.md
@@ -112,7 +112,7 @@ See [releasing](./doc/releasing.md).
 Distribution packages (i.e., .deb/.rpm) are built and published for several Linux distributions.  The installation of these packages for supported platforms is documented here.
 
 ### Unstable Development Distribution Packages ###
-To install the latest unstable development package, change `1.11` to `development` in the package URLs listed in the subsequent instructions. For example, `https://libmongocrypt.s3.amazonaws.com/apt/ubuntu <release>/libmongocrypt/1.11` in the instructions would become `https://libmongocrypt.s3.amazonaws.com/apt/ubuntu <release>/libmongocrypt/development`. Do not use the unstable version of libmongocrypt in a production environment.
+To install the latest unstable development package, change `1.12` to `development` in the package URLs listed in the subsequent instructions. For example, `https://libmongocrypt.s3.amazonaws.com/apt/ubuntu <release>/libmongocrypt/1.12` in the instructions would become `https://libmongocrypt.s3.amazonaws.com/apt/ubuntu <release>/libmongocrypt/development`. Do not use the unstable version of libmongocrypt in a production environment.
 
 ### .deb Packages (Debian and Ubuntu) ###
 
@@ -153,13 +153,13 @@ sudo sh -c 'curl -s --location https://pgp.mongodb.com/libmongocrypt.asc | gpg -
 Second, create a list entry for the repository.  For Ubuntu systems (be sure to change `<release>` to `xenial`, `bionic`, `focal`, or `jammy`, as appropriate to your system):
 
 ```
-echo "deb https://libmongocrypt.s3.amazonaws.com/apt/ubuntu <release>/libmongocrypt/1.11 universe" | sudo tee /etc/apt/sources.list.d/libmongocrypt.list
+echo "deb https://libmongocrypt.s3.amazonaws.com/apt/ubuntu <release>/libmongocrypt/1.12 universe" | sudo tee /etc/apt/sources.list.d/libmongocrypt.list
 ```
 
 For Debian systems (be sure to change `<release>` to `stretch`, `buster`, `bullseye`, or `bookworm` as appropriate to your system):
 
 ```
-echo "deb https://libmongocrypt.s3.amazonaws.com/apt/debian <release>/libmongocrypt/1.11 main" | sudo tee /etc/apt/sources.list.d/libmongocrypt.list
+echo "deb https://libmongocrypt.s3.amazonaws.com/apt/debian <release>/libmongocrypt/1.12 main" | sudo tee /etc/apt/sources.list.d/libmongocrypt.list
 ```
 
 #### Package installation ####
@@ -181,7 +181,7 @@ Create the file `/etc/yum.repos.d/libmongocrypt.repo` with contents:
 ```
 [libmongocrypt]
 name=libmongocrypt repository
-baseurl=https://libmongocrypt.s3.amazonaws.com/yum/redhat/$releasever/libmongocrypt/1.11/x86_64
+baseurl=https://libmongocrypt.s3.amazonaws.com/yum/redhat/$releasever/libmongocrypt/1.12/x86_64
 gpgcheck=1
 enabled=1
 gpgkey=https://pgp.mongodb.com/libmongocrypt.asc
@@ -200,7 +200,7 @@ Create the file `/etc/yum.repos.d/libmongocrypt.repo` with contents:
 ```
 [libmongocrypt]
 name=libmongocrypt repository
-baseurl=https://libmongocrypt.s3.amazonaws.com/yum/amazon/2023/libmongocrypt/1.11/x86_64
+baseurl=https://libmongocrypt.s3.amazonaws.com/yum/amazon/2023/libmongocrypt/1.12/x86_64
 gpgcheck=1
 enabled=1
 gpgkey=https://pgp.mongodb.com/libmongocrypt.asc
@@ -219,7 +219,7 @@ Create the file `/etc/yum.repos.d/libmongocrypt.repo` with contents:
 ```
 [libmongocrypt]
 name=libmongocrypt repository
-baseurl=https://libmongocrypt.s3.amazonaws.com/yum/amazon/2/libmongocrypt/1.11/x86_64
+baseurl=https://libmongocrypt.s3.amazonaws.com/yum/amazon/2/libmongocrypt/1.12/x86_64
 gpgcheck=1
 enabled=1
 gpgkey=https://pgp.mongodb.com/libmongocrypt.asc
@@ -238,7 +238,7 @@ Create the file `/etc/yum.repos.d/libmongocrypt.repo` with contents:
 ```
 [libmongocrypt]
 name=libmongocrypt repository
-baseurl=https://libmongocrypt.s3.amazonaws.com/yum/amazon/2013.03/libmongocrypt/1.11/x86_64
+baseurl=https://libmongocrypt.s3.amazonaws.com/yum/amazon/2013.03/libmongocrypt/1.12/x86_64
 gpgcheck=1
 enabled=1
 gpgkey=https://pgp.mongodb.com/libmongocrypt.asc
@@ -261,7 +261,7 @@ sudo rpm --import https://pgp.mongodb.com/libmongocrypt.asc
 Second, add the repository (be sure to change `<release>` to `12` or `15`, as appropriate to your system):
 
 ```
-sudo zypper addrepo --gpgcheck "https://libmongocrypt.s3.amazonaws.com/zypper/suse/<release>/libmongocrypt/1.11/x86_64" libmongocrypt
+sudo zypper addrepo --gpgcheck "https://libmongocrypt.s3.amazonaws.com/zypper/suse/<release>/libmongocrypt/1.12/x86_64" libmongocrypt
 ```
 
 Finally, install the libmongocrypt packages: