The Merc article doesn't give a timeline, just says they are working on it like everyone else. The Audi article is stale. Tesla doesn't give a timeline either. There is no reason to be optimistic that Level 3 will come soon. I'll say the chances of Merc or Audi releasing Level 3 in the U.S. in the next two years is close to zero.
Nissan says they will have it available next year:
Toward fully autonomous drive
Mobileye says Level 3 in 2018, available for all automakers:
The Evolution of EyeQ - Mobileye And level 4-5 coming next year. Another example of a stale article.