GDR3 Preview is LIVE!

No cert install or dev unlock required for me on my ATT 920. Just installed the app, logged in with a dev account, accepted contract, and I've got GDR3 installing.

Yeah, they said that you only have to meet 1 of the 3 requirements
 
Gears still spinning. Stuck at 10% around. Atleast it's showing a progress bar this time. Never mind it's not moving.

Worst Progress bar ever. Stayed on ~5% for about 15 minutes, then jumped to 100%. Oh well, at least it finished :)
 
I've seen it mentioned before for 1280x768 screens multiple times... Maybe it's a setting? Then again it could in fact be 1080 only.

That's what 'people' said but Microsoft said its for the new 1080p phones
 
I wish this update includes the multiple tile select and move. I think that's for 8.1 blue, right? It's odd for me that they would have some of these new functions/gestures for Win8 first then WP. But I guess more ppl use Win8 than WP.

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DONE DONE DONE :D :D

Well moving data and shenanigans now.
I made sure my 920 has enough juice this time. Already had to flash my phone twice because of running out of battery at spinning gears - -

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Where did you read that, everywhere has said, 720p and up

I've only seen Microsoft mention it on screen sizes. It's for the bigger 6" devices. I haven't seen anything about resolution. I think if someone released a 720p 6" device, it would have the extra column.
 
One thing that i noticed while installing is that there is a progress line in the "gears of death" now giving you a status of how long it will take.. That is a welcome readdition (it was present on WP7 updates)

So true, I wonder why they removed it.. for simplicity??- -

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Just checking, this is not the Bittersweet Shimmer is it? What are the differences?

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Where did you read that, everywhere has said, 720p and up

This is a quote from the Windows Blog "The larger, 1080p HD displays on these devices will make Windows Phone even more personal—for example by sporting jumbo-sized Start screens with room for six Live Tiles across instead of four."
 
Just checking, this is not the Bittersweet Shimmer is it? What are the differences?

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Bittersweet shimmer is additional firmware upgrades provided by Nokia for Lumias, this is an OS update, similar to how portico (GDR1) was to the original WP8