Apple has just released a new beta of iPhone OS 4.0, and it’s available at developer.apple.com.
You can leave this page open and keep refreshing, as we’ll be updating it with all the details about this release. If you spot something new or bugs, feel free to share in the comments below.

UPDATE #1
- Here are the first details about this new beta. First of all, it seems like there’s a default Utilities folder which contains the clock, calculator and voice memos.
- There are new backgrounds included.


- Tethering options:


Camera roll now supports landscape mode. Extended support for different orientations finally coming to the iPhone?


#2
That's what Will Robertson said 3 months ago:
The gps icon in maps has been changed since first beta.
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Richard Bukovansky Reply:
May 19th, 2010
@Will Robertson, I believe it was changed at Beta 2…
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Will Robertson Reply:
May 19th, 2010
@Richard Bukovansky, My comment was made when this post originally had a screenshot saying that the icon change was new to Beta 4, since it has been edited out, it now looks like I am saying its new! lol
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#3
That's what Michael said 3 months ago:
Does the camera work?? All I need to worry about.
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Federico Viticci Reply:
May 19th, 2010
@Michael, Yep.
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Michael Reply:
May 19th, 2010
@Federico Viticci, Thanks! I upgraded and the backgrounding dock animation is a lot smoother, and the whole OS is running much more snappier than before.
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Michael Reply:
May 19th, 2010
@Federico Viticci, One more bug, when you take calls/listen to voicemail on this beta, the sensor that turns the screen off doesn’t turn back on when you remove the device from your head. It requires you to press the sleep/wake button, and then press it again to get it running again.
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#4
That's what julian said 3 months ago:
i new it, they did this on purpose, so at the bottom there going to add the facebook app, and all new stuff i presume, why else would they all be in folders.
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Jonny Reply:
May 19th, 2010
@julian, Probably so users know the feature exists as it’s not very discoverable
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Kevin Reply:
May 19th, 2010
@julian, I doubt it. Why would they go out of their way to make a Facebook app that is only of value to a portion of users and waste their programmer resources?
Besides, Apple’s already worried that a lot of their core functionality depends on third-party services from Google, Yahoo, etc who can change things as they please.
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#5
That's what Ignignokt said 3 months ago:
… Tethering options …
Bricks were shat at these words
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#7
That's what Sofia Fontes said 3 months ago:
Camera roll works in landscape in beta 3, it’s not new.
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#9
That's what camtab said 3 months ago:
The carrier name used to scroll if it didnt fit the allocated space (Telecom NZ for example) It now appears to push the signal strength indicator further right as it now all fits in. This might just be a coincidence but something new since I installed Beta 4. May indicate more acceptance of carriers other than O2 and AT&T etc
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#10
That's what MusicLover said 3 months ago:
I have activation slots free if anyone wants one – $5 to it.support.staff@gmail.com via paypal. Screenshot back as proof of addition to my program.
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#11
That's what camtab said 3 months ago:
There is talk of a special home screen folder called “utilities” where features like clock, weather and the like are now kept but I dont have it on my Beta 4 version? Did anyone else get the folder? Not that I want it anyway..happy to have my clock and weather app separate on the home screen. One additional change is that sending photos to Mobile Me now works again (it was broken in Beta 3).
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