Nope. I have a 4K TV. The Jio STB's Settings menu still used to show only 1080p as the best available resolution. I have not checked its availability recently though.
A Jio executive called me today evening for a random feedback on Jio Fiber. I mentioned to him the following as areas of improvement. He assured me that our phone call was being recorded, and that they will definitely take my feedback into account.
1) Upload speed needs to be par with download speed:
For this, he said that this is because of a TRAI rule for telecom providers who own license for providing internet, and that the rule says upload speed should not exceed 1/8 th of the download speed. And that for 100mbps Jio plans, the upload speed should be around 12mbps. He explained that Jio, Airtel etc,., are telecom providers and that's why this TRAI rule applies for them. But companies like ACT Fibernet are primarily only ISPs (Internet Service Providers), and that they don't buy internet from TRAI, but from other telecom providers, and that's why the 1/8 th TRAI rule does not apply to them. That's why they are still able to provide equal upload/download speeds. He also said that the telecom providers have appealed to TRAI to change this rule, so that they can increase the upload speeds.
2) Addition of Netflix:
He said it will be probably added by the end of this month. Jio is working on a deal with Netflix to add it, possibly to the Gold Plan.
3) Disney+ Hotstar Premium Plan:
He said they will take this request into account.
4) 4K Support for STB:
They will take the request into account.