The LG G8S ThinQ was released months after the regular G8 and it's a slight downgrade. It has a slightly larger screen 6.2" vs. 6.1", but with 1080p resolution. And while it gained stereo speakers, battery charging support took a small step back. The camera setup features both upgrades and downgrades. Here's the head to head comparison. The LG V30S was a clear upgrade over the V30 (though a minor one). The "S" naming scheme doesn't strictly mean an upgrade, but isn't necessarily a downgrade either. So, with two more "S" phones on the way - LG V60S and LG K50S - it's not clear what to...
The V30S was an upgrade over the V30, the G8S was something of a downgrade from the G8, so it's hard to tell what to expect from these two.