As JKOnTheRun reports, Android engineers have tweeted that T-Mobile G1 (HTC Dream) phones may not be able to handle any OS updates going forward. It seems that the early G1 model has limited system memory and the current version 1.5 (aka Cupcake) update totally filled it up. There are also reports coming out of Asia (HTC is a Taiwan company) that the HTC Magic, dubbed the MyTouch 3G, will be receiving the innovative “Sense” UI update only in Europe, but that T-Mobile models in the U.S. won’t get it. Check out more here.