Only thing I know as a difference between the EF9500 and these are slightly brighter output, wider color gamut, and the G-model has an additional HDMI? That doesn't sound enough to warrant that jump for me alone for the same size for sure. It does sound like the scenario you described.
Now, the differences between the B, E, and G seems to be aesthetics, sound, and the G-model has 4 HDMI, while the B-series doesn't have 3D. That's all on paper. There has to be something else going on there in the background as in CPU or something otherwise I can't see how LG can justify price differences on those things alone.
LG updated their old flagship TVs to WebOS 2.0 last year, I kind of hope they do the same this time, but I haven't seen any mention of it yet.
And yes, it's absolutely crazy to think that those LED TVs this year will hit 1000+nits with ease. I'd check that out just to say I saw it, and never look at it again as that's too damn bright. I prefer to see black and no image when I close my eyes after looking at a TV usually. lol.
2016 OLED upgrades:
- 50% increase in light output (400 nits to 600 nits)
- Color gamut increase from 86% DCI to 99% DCI
- Input lag decreases from 50ms to 34ms
- Dolby Vision support
- HDR presets (standard, bright, vivid) control luminance range for day/night HDR viewing.
- Production updates to reduce panel uniformity issues.
- VESA compatible mounting support
- VP9 Profile 2 support for Youtube HDR
- User control over voltage compensation process
Right now pricing estimates look like this:
G6: 77" $25,000, 65" $8,000 - 4 HDMI, better soundbar, one piece folding design, flat, 3D, panel on glass design
E6: 65" $7,000, 55" $5,000 - Soundbar, flat, 3D, panel on glass design
C6: 65" $6,000, 55" $4,000 - Curved, 3D
B6: 65" $6,000, 55" $4,000 - Flat, 2D only
No way I would be able to justify going from a EF9500 to a 2016 especially if I had one without any panel issues. It has HDMI 2.0a and supports HDR10. That should be good for a few years until LG starts shipping larger panels from their new OLED plant that should be coming online around mid 2018.
EDIT: Only the 65" G6 and 65" E6 pricing is official. The rest is what some retailers are taking preorders for. Launch is still months away for most models so pricing could still change.