One thing I was curious about with other people that own it. Does anyone notice that the brightness settings are dimmer for the same settings vs iPad 2? I don't have my iPad 2 any more so i can't compare side by side but it seems like the new screen can dim a lot lower than the old iPad(which is a good thing for night time reading).
The retina display is amazing. Reading text seems to be a lot easier on my eyes like in iBooks. Other than that, there aren't that many optimized apps out there for this great display but what I've used so far makes the upgrade worth it to me since it is my most used device especially for reading books/webpages/RSS etc.
This is my first iPad and so far I'm finding it awesome! Retina is very clean and easy to read. Would like to compare to an iPad 2. Running some of my bigger apps is very smooth. I used to have an iPhone so I had a lot of apps in iTunes and I copied them onto the iPad. They run a lot faster than my iPhone ran them thats for sure. Works really well with my ZaGGfolio bluetooth case and keyboard! Surprised that my laptop (new Tecra M11) can't charge the battery on this thing.
The retina display is cool especially side by side with the old iPad2. For example, in the Apple iPad ad with the flower you can clearly see finger prints on the person pinching the screen. These are not visible on the iPad2. My own photos tend to look the same. New issues of SI and Time look sharper than older issues. They must have upped the resolution.
Clearly this iPad is easier to read from. Didn't check iBooks before I restored the iPad2.
The most obvious thing I've noted is the heat! I actually took it out of my cover to cool down. Not sure how it would do on a long flight.
Downloaded an HD TV snaek peak (to save time) from the us iTunes store. Excellent quality and clarity. You can notice the difference from the SD iTunes material. Home 720p videos look great too.
I'm in the processing of setting mine up so I can't tell you much yet, but I can say this: while I know the new iPad is a bit thicker and heavier than the iPad 2, I'm coming to it from the iPad 1 so for me it seems much lighter and thinner.
The initial setup screen was MUCH dimmer out of the box, but this may be because I put it in my old original Apple cover (remember those) for the iPad 1 (it fits okay, not perfect), which may be messing with the light sensor. I'll adjust the brightness once I'm done restoring from my iPad 1 backup, and I'll post some thoughts (I'm keen to load a couple of short 720p video files I have lying around to test out that function as well, will download a 1080p sample too if I can find a good one).