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
5.0.1	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 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 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 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 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 for Cortex-M3 processor