I have zero proof of anything lol.
Except for fundamental scientific principles which say that X amount of power is X amount of power no matter how you create it - be it a 44.5kWh battery powered by hamsters in wheels or uranium.
I can't imagine that they wouldn't explicitely lie that they have some type of new technology in the battery pack compared to previous.
@Abhijoy from India has basically said what they've done - used a different test (iCat vs ARAI) to give the new range.
When I say I think europe is getting a proper new model unlike the Indian one, I got the impression from Miles on podcast that lets say it's like the Indian model is ver 1.1, the EU one when it's launched will be version 2.0.