Yeah, they haven’t updated the zwave radio since 2018, so they’re starting to fall behind…nothing announced regarding timelines. Since 2018, Aeotec acquired Popp which has a 700 series in a different model line, but that doesn’t work with SmartThings. And Samsung released the SmartThings station last year, which has Zigbee, Thread and Matter support, but no zwave. So it’s hard to figure the trajectory. 
Hubitat, Homey, Homeseer, Fibaro, Ezlo Vera, Homeseer, and the new Zooz Zbox all have 700 series hubs out. But SmartThings has been so busy with its own major architecture change and supporting matter that I don’t think they’ve given much thought to zwave. It’s always been a limited implementation when compared to the zwave first competitors.
I’ve got a topic in the forum on some of the missing pieces if you’re interested: