You have CAT I, II or III-A, B or C precision approaches. CAT I, II and III have aircraft categories A,B,C, and D.
Delhi Notams for the past year have mentioned airport upgrading with the installation of a CAT II landing system. I'd find it hard to believe the current system has always been CAT III since the ILS is very erratic at the best of times, there are no CAT III runway markings, there is no CAT III precision approach lighting system or CAT III taxiway markings.
Etihad Girl, You're a great way to fly.