Originally teased last month, 343 provided more information today on the two new maps coming to Halo Infinite when Season 2 launches on May 3rd, 2022. In the blog Tyler Ensrude, a Multiplayer Level Designer on Infinite provided some insight into the map's inspiration and design influences, as well as mentioning that he believes it will be a versatile map in the Halo Championship Series rotation:
Catalyst is a symmetrical arena map nested high up inside of an expansive, tunnel-like Forerunner structure. You’ll find waterfalls pouring down around suspended catwalks, overgrown cathedral walls, and a light bridge connecting the sides of the map together.
Some folks have definitely noted Haven vibes from Halo 4 in the first screenshot we shared back in March, but I think the biggest influence for Catalyst though was Epitaph from Halo 3. I really wanted to evoke that architectural style because it left a huge impression on me after all these years.
Catalyst was meant to expand our CTF (Capture The Flag) suite, but it proved to be a solid contender for several modes and was actually the first map that our new Land Grab mode was implemented on, which quickly became a favorite amongst the team.
It was also previously confirmed by Halo Esports Lead, Tashi, that Catalyst as well as King of the Hill would both be seen in official HCS competition when Split 2 begins on May 23rd.
Here's the link for the official Halo blog announcement which also has information on the new Big Team Battle map, Breaker.