Ethereum roadmap - arealive/Viper GitHub Wiki

Frontier is the first in a series of releases that punctuate the roadmap for the development of Ethereum. Frontier will be followed by ‘Homestead’, ‘Metropolis’ and ‘Serenity’ throughout the coming year, each adding new features and improving the user friendliness and security of the platform.

[1] https://ethereum.gitbooks.io/frontier-guide/frontier.html