The way I interpreted the email is as follows, although I absolutely could be wrong.

This weekend, Envoy management transmitted to your MEC a Protocol Agreement... Finally, the company included its intent to continue discussing reserve changes that would include a long call system.

I interpret this that the company sent over an outline with pay, flow, training center, and reserve.

After several days of extensive negotiations and back and forth discussions, the company made a formal proposal...the MEC agreed to implement the terms of the company's proposal.

I interpret this as saying that after negotiations, the outlined changes discussed above were finalized without language.

...was spent with members of Envoy management finalizing contract language.

To me, it sounds as if once the finalized language is published, it will include the rates, flow language, and hopefully the new reserve rules.

I could be wrong, and absolutely agree this sounds vague but that is the way I interpreted the MEC brief.