A significant new release of the Bitcoin-Qt and Bitcoind clients from Bitcoin.org, v0.8.0, is now available for download.
This v0.8 release includes a number of new features, performance improvements and bug fixes and is the first major feature release since the v0.7 release about five months ago. This release was designed to improve performance and handle the increasing volume of transactions on the network.
A post on Bitcoin Money blog (@BitcoinMoney) describes some of the features, improvements and fixes which include compatibility with OSX 10.8 and Windows 8, dramatically faster blockchain sync, support for lightweight clients, and more.
A new version of the Bitcoin-Qt and Bitcoind clients from Bitcoin.org, v0.6.0, includes a number of new features as well as significant performance improvements, bug fixes and support for a change to the Bitcoin protocol.
There was a security update to the Windows versions of the Bitcoin-QT client from Bitcoin.org. Windows users that have a previous 0.5.x release or are testing the upcoming 0.6.x developer release are encouraged to update immediately.
Mac and Linux versions are not affected, nor is the bitcoind command line client impacted. v0.4.x and prior are not impacted either.
The Bitcoin client from Bitcoin.org has a new look. Version 0.5.0 has been released and has a completely new graphical interface which uses the Qt user interface toolkit.The release also includes a major bug fix related to encryption of the wallet keys.