What's the state on roles and with_items?

Hi all,

apparently roles allowed using with_items some time ago:
https://github.com/ansible/ansible/issues/12623
https://github.com/ansible/ansible-examples/blob/master/language_features/roletest2.yml

I read 2.1 will bring this feature back, but I only found examples
using includes.

https://docs.ansible.com/ansible/playbooks_loops.html#loop-control
https://docs.ansible.com/ansible/playbooks_loops.html#loops-and-includes-in-2-0

Can someone clarify what exactly is working in 2.1, what is planned to
work sometime later and what is not getting re-implemented?

Thanks.

Johannes