Post 1 Updated with 23551
Release Notes:
Latest COM 5 Branch Windows CE: 5.2 Build 4524 (March 16, 2010 15:55:51)
System info report attached, not a lot changed only BaseApps, BROWSING, BTDUN, MediaOS, Office, Shell, Webview.
AKU is 5500 23111 has a newer AKU but nothing noticeable and I know people like the threaded email of COM 5
As with all latest COM 5 releases, they come with a newer version of office and so I cook it in- TellMe version
ROM Notes:
* OK Soft Key still isn't working With Settings-personal-phone-services. Map OK to a hard button
* No WMP controls with lockscreen. Still
Post 2 Updated with the latest myphone cab file thanks RyanMogul6800 from xda