In an interview with Fierce Wireless, an executive from T-Mobile let it be known that there will be follow-up devices to the G1 and that they will be out this year. Neville Ray, T-Mobile's Senior VP for Engineering and Operations said that his company will be offering more G series phones along with other products, like a data card, in the weeks and months ahead. The G1, currently offered in the U.S. exclusively on T-Mobile USA, is the World's first cellphone running on Google's open source Android OS. There have been many false starts in the race to become the second Android phone, but it appears that T-Mobile plans on expanding the line in 2009. The G1 is a touchscreen model that also uses a trackball. It has a physical QWERTY keyboard which will be supplemented with a virtual QWERTY as part of the Cupcake upgrade for the device, which is expected to be released soon.