This is Botan 1.6.0, the first stable release of the new Botan API. This release is mostly compatible with Botan 1.4.x, and many applications written against 1.4.x will work against 1.6.0 without any modifications. However some applications, particularly ones doing complex processing, will require changes to match the new API. You can file bugs at http://www.randombit.net/bugzilla Jack (lloyd@randombit.net)