This is AMD stating specifically that “initial launch quantities” of Vega64 did include cards at $499, $599 and $699 price points. However, it does not confirm that AMD will continue to use this pricing going forward. It simply states that at launch, those prices existed.
The very next sentence says: “We are working with our partners to restock all SKUs of Radeon RX Vega64, including standalone cards and Gamer Packs over the next few weeks”.
This is not AMD saying that GPUs will be back in stock at their original price points, it is merely AMD saying that GPUs will be back in stock. It appears to be intentionally ambiguous, which ultimately means that this statement provided us with no real, definitive answers.