would explain why vega 56 are going EOL or not being resupplied by vendors. specially if Polaris 30 can hit 1700hz overclock, sure it will under water and less energy then vega 56- whilst being cheaper to produce then Vega .
if AMD were smart, Vega 7nm would be pushed to Enterprise and Polaris 7nm with GDDR 6 would be ideal for consumers - least middle/high tier market . guessing they could easily increase core count to