Sony Ericsson announced the G502 and the Z780 mobile phones today.

The HSDPA Sony Ericsson G502 (photo) features 2MP camera, Bluetooth, FM Radio, Web 2.0 ready, media player, 3D games and USB.
The G502 is a UMTS/HSDPA 2100 and GSM/GPRS/EDGE 900/1800/1900 phone that will be available in Champagne Black and Brilliant Hazel in selected markets from Q2 2008.

The Sony Ericsson Z780 (photo below) is a tri-band 3G and HSDPA clamshell style phone with built-in aGPS functionality. Other features of the Z780 include Google Maps, FM Radio, Media player, Bluetooth, and 2MP camera.

The Z780 is a UMTS/HSDPA 850/1900/2100 and GSM/GPRS/EDGE 850/900/1800/1900 phone that will be available in Grand Onyx and Amethyst Silver in selected markets from Q2 2008.
Via this Sony Ericsson press-release.