The following table shows the overall high-level history of the various CMSIS releases. In addition, each CMSIS component has its own release history:
| Version  | Description   | 
| 5.4.0  | 
- CMSIS-Core (Cortex-M) 5.1.2 Minor fixes and slight enhancements, e.g. beta for Cortex-M1.
 
- CMSIS-Core (Cortex-A) 1.1.2 Minor fixes.
 
- CMSIS-Driver 2.6.0 (unchanged)
 
- CMSIS-DSP 1.5.2 (unchanged)
 
- CMSIS-NN 1.1.0 Added new math function (see revision history)
 
- CMSIS-RTOS 2.1.3 Relaxed interrupt usage.
- RTX 5.4.0 (see revision history)
 
 
 
- CMSIS-Pack 1.5.0 (unchanged)
 
- CMSIS-SVD 1.3.3 (unchanged)
 
- CMSIS-DAP 2.0.0 (unchanged)
 
- CMSIS-Zone 0.0.1 (unchanged)   
 
 
 | 
| 5.3.0  | 
- CMSIS-Core (Cortex-M) 5.1.1
 
- CMSIS-Core (Cortex-A) 1.1.1
 
- CMSIS-Driver 2.6.0 (unchanged)
 
- CMSIS-DSP 1.5.2 (unchanged)
 
- CMSIS-NN 1.0.0 Initial contribution of Neural Network Library.
 
- CMSIS-RTOS 2.1.2 (unchanged)
 
- CMSIS-Pack 1.5.0 (unchanged)
 
- CMSIS-SVD 1.3.3 (unchanged)
 
- CMSIS-DAP 2.0.0 Communication via WinUSB to achieve high-speed transfer rates.
 
- CMSIS-Zone 0.0.1 (unchanged)   
 
 
 | 
| 5.2.0  | 
- CMSIS-Core (Cortex-M) 5.1.0 MPU functions for ARMv8-M, cmsis_iccarm.h replacing cmsis_iar.h
 
- CMSIS-Core (Cortex-A) 1.1.0 cmsis_iccarm.h, additional physical timer access functions
 
- CMSIS-Driver 2.6.0 Enhanced CAN and NAND driver interface.
 
- CMSIS-DSP 1.5.2 Fixed diagnostics and moved SSAT/USST intrinsics to CMSIS-Core.
 
- CMSIS-RTOS 2.1.2 Relaxed some ISR-callable restrictions.
 
- CMSIS-Pack 1.5.0 (unchanged)
 
- CMSIS-SVD 1.3.3 (unchanged)
 
- CMSIS-DAP 1.2.0 (unchanged)
 
- CMSIS-Zone 0.0.1 (unchanged)   
 
 
 | 
| 5.1.1  | 
- CMSIS-Core (Cortex-M) (unchanged)
 
- CMSIS-Core (Cortex-A) (unchanged)
 
- CMSIS-Driver 2.05 (unchanged)
 
- CMSIS-DSP 1.5.2 (unchanged)
 
- CMSIS-RTOS 2.1.1 Fixed RTX5 pre-built libraries for Cortex-M.
 
- CMSIS-Pack 1.5.0 (unchanged)
 
- CMSIS-SVD 1.3.3 (unchanged)
 
- CMSIS-DAP 1.1.0 (unchanged)
 
- CMSIS-Zone 0.0.1 (unchanged)   
 
 
 | 
| 5.1.0  | 
- CMSIS-Core (Cortex-M) 5.0.2 several minor corrections and enhancements
 
- CMSIS-Core (Cortex-A) 1.0.0 implements a basic run-time system for Cortex-A5/A7/A9
 
- CMSIS-Driver 2.05 status typedef made volatile
 
- CMSIS-DSP 1.5.2 fixed GNU Compiler specific diagnostics
 
- CMSIS-RTOS 2.1.1 added support for Cortex-A5/A7/A9 to RTX5
 
- CMSIS-Pack 1.5.0 added SDF format specification
 
- CMSIS-SVD 1.3.3 (unchanged)
 
- CMSIS-DAP 1.1.0 (unchanged)
 
- CMSIS-Zone 0.0.1 (Preview) format to describe system resources and tool for partitioning of resources   
 
 
 | 
| 5.0.1  | 
- CMSIS-Core 5.0.1 added __PACKED_STRUCT macro and uVisor support
 
- CMSIS-Driver 2.05 updated all typedefs related to status now being volatile.
 
- CMSIS-DSP 1.5.1 added ARMv8M DSP libraries
 
- CMSIS-RTOS 2.1.0 added support for critical and uncritical sections
 
- CMSIS-Pack 1.4.8 add Pack Index File specification
 
- CMSIS-SVD 1.3.3 (unchanged)
 
- CMSIS-DAP 1.1.0 (unchanged)   
 
 
 | 
| 5.0.0  | Added support for: ARMv8-M architecture including TrustZone for ARMv8-M and Cortex-M23, Cortex-M33 processors
- CMSIS-Core (Cortex-M) 5.0.0 added support for ARMv8-M and Cortex-M23, Cortex-M33 processors
 
- CMSIS-Driver 2.04.0 (unchanged)
 
- CMSIS-DSP 1.4.9 minor corrections and performance improvements
 
- CMSIS-RTOS 2.0.0 new API with RTX 5.0.0 reference implementation and corrections in RTX 4.8.2
 
- CMSIS-Pack 1.4.4 introducing CPDSC project description
 
- CMSIS-SVD 1.3.3 several enhancements and rework of documentation
 
- CMSIS-DAP 1.1.0 (unchanged)   
 
 
 | 
| 4.5.0  | Maintenance release that is fixing defects. See component's revision history for more details. See component's revision history for more details.
- CMSIS-Core (Cortex-M) 4.30.0
 
- CMSIS-DAP 1.1.0 (unchanged)
 
- CMSIS-Driver 2.04.0
 
- CMSIS-DSP 1.4.7
 
- CMSIS-Pack 1.4.1
 
- CMSIS-RTOS RTX 4.80.0
 
- CMSIS-SVD 1.3.1   
 
 
 | 
| 4.4.0  | Feature release adding CMSIS-DAP (see extended End User Licence Agreement) and CMSIS-Driver for CAN. See component's revision history for more details.
- CMSIS-Core (Cortex-M) 4.20.0
 
- CMSIS-DAP 1.1.0
 
- CMSIS-Driver 2.03.0
 
- CMSIS-DSP 1.4.5 (unchanged)
 
- CMSIS-RTOS RTX 4.79.0
 
- CMSIS-Pack 1.4.0
 
- CMSIS-SVD 1.3.0   
 
 
 | 
| 4.3.0  | Maintenance release adding SAI CMSIS-Driver and fixing defects. See component's revision history for more details.
- CMSIS-Core (Cortex-M) 4.10.0
 
- CMSIS-Driver 2.02.0
 
- CMSIS-DSP 1.4.5
 
- CMSIS-RTOS RTX 4.78.0
 
- CMSIS-Pack 1.3.3
 
- CMSIS-SVD (unchanged)   
 
 
 | 
| 4.2  | Introducing processor support for Cortex-M7.    | 
| 4.1  | Enhancements in CMSIS-Pack and CMSIS-Driver. 
 Added: PackChk validation utility 
 Removed support for GNU: Sourcery G++ Lite Edition for ARM   | 
| 4.0  | First release in CMSIS-Pack format. 
 Added specifications for CMSIS-Pack, CMSIS-Driver   | 
| 3.30  | Maintenance release with enhancements in each component   | 
| 3.20  | Maintenance release with enhancements in each component   | 
| 3.01  | Added support for Cortex-M0+ processors   | 
| 3.00  | Added support for SC000 and SC300 processors 
 Added support for GNU GCC Compiler 
 Added CMSIS-RTOS API   | 
| 2.10  | Added CMSIS-DSP Library   | 
| 2.0  | Added support for Cortex-M4 processor   | 
| 1.30  | Reworked CMSIS startup concept   | 
| 1.01  | Added support for Cortex-M0 processor   | 
| 1.00  | Initial release of CMSIS-Core (Cortex-M) for Cortex-M3 processor   |