I think the answer is in the wording they used:•Provides HDMI® 2.0 compatibility (Applies to 4K models only)Supports 4K 60p (3840X2160p (59.94/60Hz) YCbCr 4:2:0 8bit, 4096X2160p (59.94/60Hz) YCbCr 4:2:0 8bit)And the second sentence is not its own bullet point, but an explanation of the bullet point above it.They're not going to provide 4K support to 1080p sets (even if they could) because they wouldn't be able to extract $3000 out of your wallet then!.
I can confirm that they do not work with the W9. Just like you, I had purchased my second 2 PS3 glasses to work with my HX850, and was bummed that they didn't work with the new set. No, the new glasses aren't nearly as comfortable and don't block out light from the side like the PS3 ones, but at least 4 were included free with the set!
To be fair, there are definitely people who have had IR issues for more than those small windows of time, so I think it's completely fair to say that claims that it isn't an issue anymore are wrong. Some people have it, some don't. I, for one, could never get a plasma, as most of my viewing is through HTPC.
Honestly, they're close enough that I use them both. Cinema 1 for accurate, lights-off viewing (save for my bias lighting) and 2 for accurate, lights-on or some-sunlight viewing. The only things I change are Resolution and Backlight.
I think it was discussed earlier in the thread, but it depends on the Picture mode you’re using. Cinema 1 and 2 have some slightly different processing, with 2 having a little more sharpening. So I have Resolution set to 10 for Cinema 1 and 5 for Cinema 2. If you have a PC hooked up to the set, the difference with viewing text makes the difference easily apparent.