They have said clearly that the core is licensed from ARM and one of the Neoverse future models.
There was no information whether it will have any good SVE2 implementation. On the contrary they insisted only on the integer performance and on the high-speed memory interface.
Here's Anandtech's article on the previous Neoverse V1/N2 announcement: https://www.anandtech.com/show/16073/arm-announces-neoverse-... arm weren't saying anything official but Anandtech did a little digging and reckons V1 is SVE 1 and v8 and N2 could be Armv9 with SVE 2.
I'd suspect NVidia would be using the V1 here as it's the higher performing core, but not way to be certain.
"E" is efficiency, N is standard, V is high-speed. IIRC, N is the overall winner in performance/watt. Efficiency cores have the lowest clock speed (overall use the least amount of watts/power). V purposefully goes beyond the performance/watt curve for higher per-core compute capabilities
There was no information whether it will have any good SVE2 implementation. On the contrary they insisted only on the integer performance and on the high-speed memory interface.