Allen
Hotshot
Joined: Oct 1999
Posts: 8,855
Ohio USA
Not much known for sure. But the early Summer Navi release is rumored to have slipped to October 2019.
Quote
AMD Navi 7nm GPUs Based Radeon RX Graphics Cards Reportedly Delayed Till October 2019
Radeon VII utilizes the 7nm architecture but it is essentially a die shrunk of an existing architecture. The Navi GPUs will be designed around 7nm from the start and that would definitely help AMD take full advantage of the 7nm process node.
[The delay] may be attributed to the 7nm supply as the Radeon VII, a high-end chip is already available in lower quantities than expected and is out of stock almost globally.
AMD's 7nm supplier did have a major accident while manufacturing some 7nm products for other clients. This delay may follow from that incident.