The Cassandra team is very pleased to announce the release of Apache Cassandra
version 2.0.0. Cassandra 2.0.0 is a new major release that adds numerous
improvements[1,2], including:
  - Lightweight transactions[4] that offers linearizable consistency.
  - Experimental Triggers Support[5].
  - Numerous enhancements to CQL as well as a new and better version of the
    native protocol[6].
  - Compaction improvements[7] (including a hybrid strategy that combines 
    leveled and size-tiered compaction).
  - A new faster Thrift Server implementation based on LMAX Disruptor[8].
  - Eager retries: avoids query timeout by sending data requests to other
    replicas if too much time passes on the original request.

See the full changelog[1] for more and please make sure to check the release
notes[2] for upgrading details.

Both source and binary distributions of Cassandra 2.0.0 can be downloaded at:

 http://cassandra.apache.org/download/

As usual, a debian package is available from the project APT repository[3]
(you will need to use the 20x series).

The Cassandra team

[1]: http://goo.gl/zU4sWv (CHANGES.txt)
[2]: http://goo.gl/MrR6Qn (NEWS.txt)
[3]: http://wiki.apache.org/cassandra/DebianPackaging
[4]: http://www.datastax.com/dev/blog/lightweight-transactions-in-cassandra-2-0
[5]: http://www.datastax.com/dev/blog/whats-new-in-cassandra-2-0-prototype-triggers-support
[6]: http://www.datastax.com/dev/blog/cql-in-cassandra-2-0
[7]: https://issues.apache.org/jira/browse/CASSANDRA-5371
[8]: https://issues.apache.org/jira/browse/CASSANDRA-5582