Features

BSON Library
A standalone BSON library, with a new Codec infrastructure that you can use to build high-performance encoders and decoders without requiring an intermediate Map instance.
MongoDB Driver
An updated Java driver that includes the legacy API as well as a new generic MongoCollection interface that complies with a new cross-driver CRUD specification.
MongoDB Async Driver
A new asynchronous API that can leverage either Netty or Java 7's AsynchronousSocketChannel for fast and non-blocking IO.
Core driver
The MongoDB Driver and Async Driver are both built on top of a new core library, which anyone can use to build alternative or experimental high-level APIs.