Software is downloadable from here
1. ALTA look and Feel
Here is the em UI -
Here is the BPM Workspace UI -
2. REST API
Now I will approve the above task via the REST API -
I can validate this in workspace -
REST API Docs here
3. Reusable Interface Components
To quote the new features doc -
BPM Suite 12.2.1 includes user interface (UI) components that can be embedded in WebCenter Portal. These include Task List, where Portal users can access tasks assigned to them by BPM, and Application List, where Portal users can launch BPM applications for which they have been enabled. These BPM UIs can be imported as a Portal Resource Catalog, then embedded into any Portal page, and easily configured based on a set of most common parameters.
You can find the new features overview here
Also please note -
You may need to set the following to get your ADF task forms to render in workspace.
Set the Host Name for your Human Workflow Components to localhost