I've got an S9+ which is still on the 2/1 security patch level and software version SQU1ARBG. The device support page on the Verizon website shows two more recent patches/releases - 5/1, released on 6/5 and 6/1, released today. My phone is set to automatically get updates, and when I go into settings and look for available updates, it tells me my phone is on the current version. I called tech support and they told me that Verizon rolls the updates out in waves.
It's been 10 days since the 5/1 patch was released. How is it that Apple can release iOS updates immediately to hundreds of millions of users but Verizon can't distribute a software update to all users of only one specific phone in 10 days???