With the newly announced LG Arena KM900, LG is preparing to present more models this week, according ot its press release on Korea website. The new announcement will include the LG GM730, featuring the S-Class UI optimized for smartphones. The new LG GD900 is a slider phone with a world first transparent keypad. The LG GC900 will be LG’s new 8 megapixel camera phone.

Note that the GM730 is running Windows Mobile 6.1, LG has ported over the S-Class UI for Windows Mobile with similar features. Other than the S-Class Ui, GM730 is just 11.9 mm thick and will come with a 5 megapixel camera. To be demoed at the Style Zone, the new LG GD900 has an unique transparent keypad design with a full touch screen. The transparent sliding keypad let you see through the keypad.

Other than the new models, new LG watch phone with touch screen and 7.2 Mbps HSDPA will be presented during the Mobile World Congress 2009. Check out a press video below