I am pretty sure it will get delayed even further. After all the specs come from a downed F-117A fighter in Serbia in 1999 which the US already retired.
So not only is this fighter based from stolen US technology but that technology is already retired by the USA. And it is being delayed and won't be inducted for another 15-20 years.
I don't think serial production can begin until 2025 and these jets won't be inducted into Indian squadrons until 2030.
By that time, US will already have developed the 6th Generation Fighter.
