The T-Mobile G1 has an update in the works. When the firmware will be available to owners is the main question after most of the details leaked out of the kitchen. Cupcake, as it’s been dubbed, should improve the look and the feel of the OS. The buttons should pop a bit more, there is a new transition when opening and closing apps, but most importantly is the new virtual keyboard. That particular new feature doesn’t seem to provide much function in the physical keyboard-equipped G1, but hopefully the G2 or the upcoming Huawei handset will take full advantage of it. Early screenshots after the jump.