This release is the first under the new BSL license. For details about why the license is changing see Why We Are Changing the License for Akka. Additionally the detailed FAQ is available to answer many of the questions that you may have about the license change.
Akka 10.4.0 requires Akka 2.7.0 and will not work with earlier versions of Akka. Except for that it should be a drop in replacement for Akka HTTP 10.2.x.
The release also includes a few dependency updates and one small improvement
- Update naming for status codes 413 and 422 #4165