Haha, as much as I may be the Lexus angel of death, I'm here to be optimistic and excited when it's warranted too 😂 !
I think everything about refreshed UX, new NX, new RX, TX, new GX, new LX, refreshed ES, updated/new LS is true. The ones I'm less sure of are the IS 500/IS F, RZ (because we don't know what it is for sure) and the LF-1. I didn't include any F products aside from the IS F because I think the F brand could very well be dead.
As for the V8... I'm torn, but don't have any insider scoop or anything. We've been hearing about Lexus developing a new TT V8 since 2007, so for them to kill the entire project at the last mile seems like a huge waste to me, especially since silky smooth V8s are part of Lexus' heritage. On the flip side, the world is definitely changing and it seems like 8cyl engines are going away. If there's no V8 planned for the Tundra or Toyota, Lexus would need a pretty wide use case to justify developing one: LS, LS F, LC, LC F, LX, LX F, LF-1, LF-1 F at least. I'm not sure I can see all of that happening, but time will tell. Coronavirus is a curve ball nobody saw coming, and things can be lost in translation (Japanese rumor mags), so I'm really 50/50 on the V8.