New to the MC55 is the Marvell 520-MHz PXA 270 Bulverde processor, which offers a faster clockspeed than earlier models and is a chip widely used in popular smartphones such as Palm Treo and Motorola Q. The OS has been updated to Windows Mobile 6.1, the current release. Microsoft just announced the 6.5 version, which is expected to show up in consumer-class smartphones starting in mid-2009.

There also are a bunch of new features, all of which continue the product's focus on mobile enterprise requirements begun when the was introduced 3 years ago:

2-megapixel camera with autofocus and user-controllable flash

A lot more memory: 128Mbytes SDRAM and 256Mbytes Flash

MicroSD slot instead of the larger SDIO slot