I live here too. I like the 'new' name, it has grown on me. I think it's endearing and friendly -- like a petname. "Namma Bengaluru" vs stiff-upper-lip British Bangalore.

Putting my personal opinion aside, it's definitely not catching on: https://trends.google.com/trends/explore?q=Bengaluru,bangalo...

I still call it Bangalore in any formal setting.