@mailmemishra8 he was not going to answer properly anyway. If you want to know the latest plans which are available to you. You should contact your LCO. They sometimes do not provide some plans even if it says available on Railwire website. Then again you can contact customer care, MSP or their social team on fb/twitter.
Yes, for now they switched back to Kolkata router. They can't even keep up with the advertised bandwidth on their internal speedtest server, IDK what to expect here? I even asked them to keep me on airtel backend, they said LCO will do it, LCO said they can't, well ofcourse you can't. Case closed.