The closest peer in the same XT1 family is the XT1NU3090AFF000XXX, which shares the same 3-pole form factor but is rated at 90 A. The XT1HQ3070AFF000XXX carries a 125 A frame rating. If your panel was laid out for the 90 A unit, the 125 A version will occupy the same footprint — same mounting centers, same bus-bar pitch — so it drops in without rewiring. The only difference is the higher continuous-current capacity, which gives you headroom if the load grows.
Lifecycle stage is current — an active, in-production part. No PCN or EOL notice exists. For procurement, this part has no last-time-buy clock or successor to qualify.