Last week, the Walkman phone celebrated its 3rd birthday and as a special treat, Sony Ericsson also launched three more new models to add to its beefy line-up.

The W902 is a 3.5G phone that comes with a 5-megapixel camera that’s coupled with a variety of image and video recording functionality, FM radio, Bluetooth, Shake Control, 8GB Memory Stick Micro, and exceptional music playback. The W595, on the other hand, is a slider that packs in a 3.2-megpaxiel camera, radio, Bluetooth, 3.5G connectivity and features Shake Control as well. Last, but not the least, the W302 is the slim one of the bunch. It features a 2-megapixel camera, FM radio, Bluetooth, and comes with a 512MB Memory Stick Micro. It’s not 3G capable, but it’s not as expensive as the others either.

All phones are scheduled to be released in the last quarter of 2008.