Windows Embedded CE 6.0 R3 was finalized in September 2009 for OEMs and serves as the base platform for the Zune HD and Windows Phone 7. New Cellcore components to enable devices to easily make data connections and initiate voice calls through cellular networks.CE 6.0 is compatible with x86, ARM, SH4 (only up to R2) and MIPS based processor architectures.802.11i (WPA2) and 802.11e (QoS) wireless standards, and multiple radio support.Support for Microsoft's exFAT filesystem.Read-only support for UDF 2.5 filesystem.The Platform Builder IDE is integrated into Microsoft Visual Studio 2005 as plugin (thus forcing the client to obtain Microsoft Visual Studio 2005 also), allowing one development environment for both platform and application development.

The 32 megabyte virtual memory limit has been raised to the total virtual memory up to 2 GB of private VM is available per process.

The 32 process limit has been raised to 32,768 processes.

New device driver model that supports both user mode and kernel mode drivers.The lower 2 GB is the process VM space and is private per process. The system components which now run in kernel have been converted from EXEs to DLLs, which get loaded into kernel space.Some system components (such as filesystem, GWES (graphics, windowing, events server), device driver manager) have been moved to the kernel space.Windows Phone 7, the first major release of the Windows Phone operating system, is based on Windows Embedded CE 6.0 R3 although Windows Phone 7 is also using Windows Embedded Compact 7 features. Windows Mobile 6.5 is based on Windows CE 5.2.

The OS currently serves as the basis for the Zune HD portable media player. Windows Embedded CE 6.0 was released on November 1, 2006, and includes partial source code. Each process receives 2 GB of virtual address space, up from 32 MB. CE 6.0 features a kernel that supports 32,768 processes, up from the 32-process limit of prior versions. Windows Embedded CE 6.0 (codenamed ' Yamazaki') is the sixth major release of the Microsoft Windows embedded operating system targeted to enterprise-specific tools such as industrial controllers and consumer electronics devices like digital cameras. Source-available (through Shared Source Initiative).

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