Good new.  My PS4 Pro should arrive through the mail into my hands at home some time tomorrow.  :::Hears Loud Applause from most of the VGChartZ Community:::

And I've voiced that I'll be running the PS4 Pro to a 1080p HDTV, and I'm totally cool with that.  But do I need a new receiver to take advantage of the supersampling?  Logic tells me "no, " but I want to be sure.  Running the Pro straight to the HDTV with a high bandwidth HDMI is NOT an option because I want to experience lossless audio when watching Blu-rays.  Therefore, I'm running the Pro to the receiver.  My receiver is an older Sony STR-DG820 made in 2008.  It accomodates both Dolby TrueHD and DTS-HD which are the reason why I bought the receiver.  It does NOT support 3D, 4K, and HDR.  But will I loose the advantage of supersampling if I were to run the Pro from the older a/v receiver to the 1080P television?

"Hears Loud Applause from most of the VGChartZ Community" most are Nintendo fans.

Arent 4K monitors these days just 300-400 dollars. I'd invest in one if you are going through so much trouble buying a receiver.

PS4 Pro does the scaling for you. If you set the output to 1080p on the PS4, the PS4 will super sample the higher resolution image, unless setting the PS4 to 1080p makes the game do something different (like The Last Guardian).

I was testing it myself on Rise of the Tomb Raider and the improvement is actually pretty incredible. It doesn't seem like anti-aliasing to me, I can actually see more detail.

If I were to purchase a 4K TV now, it would run me $900.  Besides, my current TV is just a year old.  Not in the market to upgrade just yet.

On a 1080P TV?  And if I understand you correctly, the scaling by the Pro creates a signal that is compatible with HDMI version 1.3 without loss of quality for 1080P sets.  is this correct?

Yes. :)

What do you mean by loss of quality? You wouldn't be getting 4k detail but the super sampled image will still be more detailed than if the game were rendering at 1080p natively. As long as you select your output to be 1080p, the signal coming out of the PS4 won't be any different for your TV than the signal coming out of a PS3.

"Loss of Quality" was probably a poor choice phrase.  I think I understand that the supersampled output going from the PS4 Pro to the a/v receiver and ultimately to the 1080P TV will be HDMI 1.3 compatible as long as I run two HDMI 1.3 category 2 cables among the components.

Yes it's the same signal as before. The pro won't even let you select 2160p as your receiver and tv don't support it. I have the same thing with my Yamaha receiver and projector. Supersampling works, and you can even take 4K screenshots on the pro.

Btw there's no advantage to using bitstream for sound, linear pcm will send the same lossless audio at 7.1 to your receiver. (Unless your receiver doesn't support that) Whether the ps4 decodes it or the receiver makes no difference. There's not much of an advantage to linear pcm either, unless you want the menu sounds when you use the pop up menu during the movie.

Supersampling is image processing done on the PS4 before the image is flushed to be output.
It has no relevance outside of the PS4 itself.

I really appreciate all the responses. In fact, I was cleaning and dusting the Alcove (the game room) for our new "arrival." Baby is due toady!