fix: new version updates (#2303)

* fix: new version updates

Signed-off-by: degenaro <lou.degenaro@gmail.com>

* fix: end of support date for 4.x

Signed-off-by: degenaro <lou.degenaro@gmail.com>

* fix: readme

BREAKING CHANGE: pydantic v2 mode and more

Signed-off-by: degenaro <lou.degenaro@gmail.com>

---------

Signed-off-by: degenaro <lou.degenaro@gmail.com>

Author: degenaro

README.md

@@ -91,15 +91,21 @@ A collection of demos utilizing trestle can be found in the related project [com
 
 ## Development status
 
-### v4: stable (actively developed)
+### v5: stable (actively developed)
+
+- supports NIST OSCAL 1.2.1 as well as previous versions
+- uses pydantic in v2 mode
+
+### v4: stable (maintenance mode)
 
 - supports NIST OSCAL 1.2.1 as well as previous versions
 - supports newly released Mapping Model
+- limited support until December 31, 2026
 
-### v3: stable (maintenance mode)
+### v3: stable (deprecated)
 
 - supports NIST OSCAL 1.1.3 as well as previous versions
-- limited support until June 30, 2026
+- no longer supported
 
 ### v2: stable (deprecated)
 

docs/index.md

@@ -38,10 +38,11 @@ Trestle provides tooling to help orchestrate the compliance process across a num
 
 ## Important Note:
 
-The current version of trestle 4.x supports NIST OSCAL 1.2.1.
+The current version of trestle 5.x supports NIST OSCAL 1.2.1.
 Below shows trestle versions correspondence with OSCAL versions:
 
 ```
+trestle 5.x => OSCAL 1.2.1
 trestle 4.x => OSCAL 1.2.1
 trestle 3.x => OSCAL 1.1.3
 trestle 2.x => OSCAL 1.0.4
@@ -53,28 +54,28 @@ Visit [pypi](https://pypi.org/project/compliance-trestle/#history) for trestle r
 
 ## Notes for install of current and older versions of trestle
 
-#### Install of trestle 4.x
+#### Install of trestle 5.x
 
-Use python 3.11.
+Use python 3.12.
 
 ```
-python3.11 -m venv venv.trestle
+python3.12 -m venv venv.trestle
 source venv.trestle/bin/activate
 pip install compliance-trestle
 trestle version
-Trestle version v4.0.0 based on OSCAL version 1.2.1
+Trestle version v5.0.0 based on OSCAL version 1.2.1
 ```
 
-#### Install of trestle 3.x
+#### Install of trestle 4.x
 
 Use python 3.11.
 
 ```
 python3.11 -m venv venv.trestle
 source venv.trestle/bin/activate
-pip install compliance-trestle==3.6.0
+pip install compliance-trestle=4.2.0
 trestle version
-Trestle version v3.6.0 based on OSCAL version 1.1.3
+Trestle version v4.2.0 based on OSCAL version 1.2.1
 ```
 
 ## Why Trestle