I think Airtel.in/Broadband on Web Browser and Mobile App shows the updated plan to all users now.
Recently I checked for my society, currently on 16 Mbps with 70GB Data, they confirmed that max speed available at my society is 40Mbps,
I found the Airtel tech nearby who visited me once, I asked why no 100 Mbps plan for me, he said, its fiber to the nearest pop (might be in society)and then copper to the home.
This will need them to replace the existing Modem(Beetel 450TC3) at customer cost, They would Charge Rs.200/- in next 5 bills for the VDSL Modem they would install, they would take away your existing modem if its from Airtel and is in working condition.
This may not be applicable for user who already have fiber modem at their place..
So I think Rs.1099/- @40Mbps for 90GB is ok for me, and Rs.200 for month doesn't bite much, but it should have been included for free.
I placed the request and they would take 7-10 days to get the modem changed and process the upgrade.
I am sure once Jio Fiber kicks in more aggressively, Airtel would again drop the price.]