Since when was that news, known for ages...

Yep it's Pentile AMOLED (what Samsung calls Super AMOLED*) + Nokia's CBD tech.
Unfortunately it's not Super AMOLED "Plus"...
So only 8x RG-BG-RG-BG sub-pixels, Vs SAMOLED+'s 12x RGB-RGB-RGB-RGB.
So 50% more sub-pixels, as Samsung likes to boast!
But this only matters for some warmer colours, they're sometimes a tiny bit more grainy/pixelated.
And some text, particularly very small text....
But at the pixel level the N9 does have about 15% more density, plus Nokia's CBD brings some improvements.

Worthwhile reading the 1st 6-posts (and links) here:
http://talk.maemo.org/showthread.php?t=74802&page=8

It's also brighter than the SGSII's, one person's anecdotal claims:
Jakimans comparo....
http://shootspeak.com/2011/10/08/scr...ung-galaxy-s2/

One issue is that adjustment of brightness isn't quite as granular as the SGSII.
So one can't get it just a tad brighter w/o reaching the pink tinge issue** at top brightness.
But hopefully that will be rectified with a hack...

It's a shame they couldn't have gone with SAMOLED+, & kept the res. at approx. 854x480.
That would've made the N9 better than many phones out now, except for beast phones on the way.
I hope they upgrade the panel later, but now that they've thrown all their chips in with MS.
I doubt that the N9 will ever get any hw refreshes, even very minor ones...

*the sub-pixel config. is exactly the same, but it may be more than a marketing name
**not confirmed if that's a wide-spread issue yet.