Actually I believe it is almost the same bullet(s) and ballistics as the rimmed 35 Rem.
I think the 350 and 450s, along with specialty rds like the 300 BO and 6.5 Grendel have the AR hunting crowd covered. This is going to get the attention of the lever and maybe single shot guys, JMO.
Remington always liked introducing new cartridges, they just have never seemed to promote them right. The 350 and 6.5 mags, 260 and 7/08 Rem, the whole short mag line etc.
New company, new cartridge I wish them luck.