It's been reported on the site elsewhere, but let's place it here as well since it hasn't quite made the splash it ought to have.
The World Chess Federation (FIDE) has confirmed that Hetul is indeed the youngest Indian ever to beat a GM. His opponent was 31-year-old Kasakh GM Nurlan Ibrayev, rated almost 600 points higher than him -- and now probably the world's most embarrassed GM.
Hetul broke the Indian record of his ‘hero’ Parimarjan Negi. The Delhi-boy had set the record when he scored over Switzerland’s Ivan Nemet in the Biel Masters in 2004 at the age of 11 years five months. Negi improved upon the record set in 1995 by Surya Shekhar Ganguly in the Goodricke Open at the age of 11 years 11 months.