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I saw this post on DSLReports and thought it was interesting. Basically upstream OFDM is being enabled in some areas along with a extra downstream OFDM channel. No new upstream speeds have been announced but I predict they are coming. Seems if you have 8 upstream channels you are close to an upgrade.
First report of 100Mbps upload on Gigablast. So it seems like AZ and OK are the two states with the upgrade.
Oklahoma here, nothing like that here