The company said on Friday that it had begun distributing the Cupcake update to G1 handsets in the UK, and that US G1 owners can expect the update to begin arriving in one week.
News of the impending update arrived last week, when T-Mobile told UK users to expect Cupcake during May after the final build of the software was pushed live.
The eagerly anticipated update adds a number of features to the G1 handset, most notably the ability to utilise the device's touch-screen keyboard capabilities, and new components which allow users to shoot video on the handset and upload directly to YouTube.
Earlier this week Google was listed as one of 46 companies being sued by a US business owner who claims to own the rights to the Android name.
Molybdenum ditelluride is a two-dimensional material that can be easily stacked into multiple layers to create a memory cell
New light-guiding nanoscale device can control and monitor a nanoparticle trapped in a laser beam with high sensitivity
Optical traps are scientific instruments in which a focused laser beam is used to exert an attractive or repulsive force on a microscopic object to hold it in place
Scientists estimate that the exoplanet has already lost up to 35 per cent of its mass over its lifetime
The observations were made using the Atacama Array in the Chilean desert