I think you've unfortunately asked the wrong question.
The estimator has already been updated for 17a, just capped at 40Mbps. All the replies so far are under 40Mbps, even though they may be connecting at that speed - like me on a 28.9 estimate, but my upstream estimate is now above 11Mbps whereas before the estimator change it was well below 10Mbps.
In my opinion the people who have replied so far aren't going to see a further change. Only those with a 40Mbps estimate will.
What anyone connecting at 40Mbps, whatever their estimate, will see is an increase in actual speed. Though maybe not until they upgrade, if that is how their ISP approaches the matter.
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