Today we are excited to ship the beta of our new version of the Blockchain Wallet API, which allows users to programmatically interface with their Blockchain wallet to build their own bitcoin apps. From the outside, much of the functionality has remained the same, and many endpoints will be familiar. This update lays the foundation for future advancements of our service, as it runs using our new v3 My Wallet engine at its core. Our roadmap and future updates rely on this engine as a foundation. Beyond just the new core, this update is faster, more usable, and more secure. It also runs as a service in your local environment, while continuing to interact with the Blockchain API.
See all the details here: http://blog.blockchain.com/2015/11/30/n ... version-2/