Pack: Update PDSC and changelogs for 5.3.0 release.
diff --git a/ARM.CMSIS.pdsc b/ARM.CMSIS.pdsc
index e777e60..6845da1 100644
--- a/ARM.CMSIS.pdsc
+++ b/ARM.CMSIS.pdsc
@@ -8,17 +8,12 @@
   <url>http://www.keil.com/pack/</url>
 
   <releases>
-    <release version="5.2.1-dev4">
-       Active development...
-    </release>
-    <release version="5.2.1-dev3" date="2018-01-23">
-       CMSIS-NN: 1.0.0
+    <release version="5.3.0-rc0" date="2018-02-20">
+      Updated Arm company brand.
+      CMSIS-Core(M): 5.1.1 (see revision history for details)
+      CMSIS-Core(A): 1.1.1 (see revision history for details)
+      CMSIS-NN: 1.0.0
         - Initial contribution of the bare metal Neural Network Library.
-    </release>
-    <release version="5.2.1-dev2">
-       Updated company brand.
-    </release>
-    <release version="5.2.1-dev1">
       CMSIS-RTOS2:
         - RTX 5.3.0 (see revision history for details)
         - OS Tick API 1.0.1
@@ -32,7 +27,7 @@
         - Added additional access functions for physical timer.
       CMSIS-DAP: 1.2.0 (see revision history for details)
       CMSIS-DSP: 1.5.2 (see revision history for details)
-      CMSIS-Driver 2.6.0(see revision history for details):
+      CMSIS-Driver: 2.6.0 (see revision history for details)
         - CAN Driver API V1.2.0
         - NAND Driver API V2.3.0
       CMSIS-RTOS:
@@ -2072,7 +2067,7 @@
 
   <components>
     <!-- CMSIS-Core component -->
-    <component Cclass="CMSIS" Cgroup="CORE" Cversion="5.0.2"  condition="ARMv6_7_8-M Device" >
+    <component Cclass="CMSIS" Cgroup="CORE" Cversion="5.1.1"  condition="ARMv6_7_8-M Device" >
       <description>CMSIS-CORE for Cortex-M, SC000, SC300, ARMv8-M</description>
       <files>
         <!-- CPU independent -->
@@ -2085,7 +2080,7 @@
       </files>
     </component>
 
-    <component Cclass="CMSIS" Cgroup="CORE" Cversion="1.0.1"  condition="ARMv7-A Device" >
+    <component Cclass="CMSIS" Cgroup="CORE" Cversion="1.1.1"  condition="ARMv7-A Device" >
       <description>CMSIS-CORE for Cortex-A</description>
       <files>
         <!-- CPU independent -->