Added additional changes

Author: stevespringett

docs/_posts/2021-xx-xx-v4.0.0.md

@@ -10,6 +10,13 @@ type: major
 * Anonymous access to Sonatype OSS Index is now enabled by default
 * Component vulnerabilities are now attributed to the analyzers responsible for finding them 
 * Added support for CycloneDX 1.2 and SPDX 2.2
+* Added component support for Blake2b and Blake3 hash algorithms
+* Added component support for SWID Tag ID
+* Projects now have identity, similar to components, and support coordinates (group, name, version), CPE, Package URL, and SWID Tag ID
+* Added support for firmware and container component types
+* When generating a CycloneDX BOM from a project or component, v1.2 of the spec is now produced
+* Updated SPDX license list to v3.11
+* Dropped support for NVD JSON v1.0 data feeds
 * Optimized NVD mirroring logic
 * Inactive projects are omitted from portfolio metrics
 * Updates to the notification email template for BOM consumed and BOM processed
@@ -31,6 +38,7 @@ type: major
 * Four Dependency-Track distribution variants are provided. Refer to [Distributions]({{ site.baseurl }}{% link _docs/getting-started/distributions.md %}) for details.
 * The traditional WAR distribution is deprecated and no longer supported. It is still being produced as of this release but will be discontinued in a future release.
 * The FrontEnd requires deployment to the root ("/") context. Deploying to any context other than root is no longer supported.
+* Some APIs have changed as of this release. APIs that were specific to the global component model have been removed. APIs that referenced a 'dependency' in the model have changed. Components are now assigned directly to projects themselves, thus eliminating the need for 'dependency' objects in v4.
 * The MySQL Connector distributed with the Docker image has been updated to version 8.0.22. When using MySQL, `ALPINE_DATABASE_DRIVER_PATH` has to be set to `/extlib/mysql-connector-java-8.0.22.jar`. Note that `ALPINE_DATABASE_DRIVER` may need to be updated as well. Refer to the [official upgrading instructions](https://dev.mysql.com/doc/connector-j/8.0/en/connector-j-upgrading-to-8.0.html).
 * The Postgres driver distributed with the Docker image has been updated to version 42.2.18. When using Postgres, `ALPINE_DATABASE_DRIVER_PATH` has to be set to `/extlib/postgresql-42.2.18.jar`.