https://videocardz.com/70511/amd-radeon-vega-frontier-features-gaming-modeAlthough no one will officially confirm this, AMD Vega was postponed few times (according to AIBs). The reason for the delay is not related to any yield issues, but performance. AMD is clearly trying to boost it by optimizing software to the very last moment. This might also explain missing reviews of Frontier (even from the most trusted tech sites). The reality is that the very first person to provide gaming benchmarks of Vega Frontier is probably going to have the most popular content in months.
Pcper has a card on order. Will be interesting to see who gets their reviews out first. Or just even the first comparable bench.