From 30f4dbb1b80f274bbd9e82a18fb2831110e058f0 Mon Sep 17 00:00:00 2001
From: Fan Jiang <ProfFan@users.noreply.github.com>
Date: Mon, 20 Dec 2021 17:11:17 -0500
Subject: [PATCH 1/2] Bump version to 4.1.1

---
 CMakeLists.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index b8480867e..2d871424c 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,7 +10,7 @@ endif()
 # Set the version number for the library
 set (GTSAM_VERSION_MAJOR 4)
 set (GTSAM_VERSION_MINOR 1)
-set (GTSAM_VERSION_PATCH 0)
+set (GTSAM_VERSION_PATCH 1)
 math (EXPR GTSAM_VERSION_NUMERIC "10000 * ${GTSAM_VERSION_MAJOR} + 100 * ${GTSAM_VERSION_MINOR} + ${GTSAM_VERSION_PATCH}")
 set (GTSAM_VERSION_STRING "${GTSAM_VERSION_MAJOR}.${GTSAM_VERSION_MINOR}.${GTSAM_VERSION_PATCH}")
 

From 781f7607f8838e4f059af424a4b61928c18205eb Mon Sep 17 00:00:00 2001
From: Frank Dellaert <dellaert@users.noreply.github.com>
Date: Thu, 23 Dec 2021 12:33:47 -0500
Subject: [PATCH 2/2] Update README.md

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 046132301..ee5746e1c 100644
--- a/README.md
+++ b/README.md
@@ -2,9 +2,9 @@
 
 **Important Note**
 
-As of August 1 2020, the `develop` branch is officially in "Pre 4.1" mode, and features deprecated in 4.0 have been removed. Please use the last [4.0.3 release](https://github.com/borglab/gtsam/releases/tag/4.0.3) if you need those features. 
+As of Dec 2021, the `develop` branch is officially in "Pre 4.2" mode. A great new feature we will be adding in 4.2 is *hybrid inference* a la DCSLAM (Kevin Doherty et al) and we envision several API-breaking changes will happen in the discrete folder.
 
-However, most are easily converted and can be tracked down (in 4.0.3) by disabling the cmake flag `GTSAM_ALLOW_DEPRECATED_SINCE_V4`.
+In addition, features deprecated in 4.1 will be removed. Please use the last [4.1.1 release](https://github.com/borglab/gtsam/releases/tag/4.1.1) if you need those features. However, most (not all, unfortunately) are easily converted and can be tracked down (in 4.1.1) by disabling the cmake flag `GTSAM_ALLOW_DEPRECATED_SINCE_V41`.
 
 ## What is GTSAM?