Ethereum has been deployed in different phases. Currently the Ethereum project is in the 2nd phase, called “Homestead”. The 4 planned phases for the growth of the Ethereum network are, in order: Frontier, Homestead, Metropolis, and Serenity. Ethereum Homestead clients are working smoothly after being in beta for several months without any major incidents. However, Ethereum is still an experimental technology. Since it allows for programs to run on a virtual machine, it’s still possible that some things may still go wrong, such as poorly written smart contracts that contain bugs.