LVW-5045GDL+ Availability in US & its Upgradability



I heard that the new LVW-5045GDL + will be available in the US in May. This model will be the replacement for the current LVW-5045. I read that this DVR can recorder dual layer DVD, 160GB drive and Divx capabilities. Does anyone know if the harddrive in this DVR can be upgraded to a higher capacity (250GB+)?