LG formalizes update in 2.1 :

"Good news for owners of LG GW620, the update to Android 2.1 will be offered in the coming weeks, information comes from an exchange with Herve Vaillant (France PR manager) on the LG booth where John was. View test LG GW620."

source : frandroid.com/11007/le-lg-gw620-aura-le-droit-a-sa-mise-a-jour-vers-android-2-1/