Hi! This is a current list of the properties, methods, constants, etc. from the beta reference requiring Flash Player 11 or AIR 3.0:

Packages (and everything inside):
flash.display3D
flash.display3D.textures

Classes:
AudioDecoder
AudioPlaybackMode (AIR 3.0 only)
CameraPosition (AIR 3.0 only)
CameraRollBrowseOptions (AIR 3.0 only)
EncryptedLocalStore (on mobile since AIR 3.0)
ExtensionContext (on mobile since AIR 3.0)
GameInput
GameInputControl
GameInputControlType
GameInputDevice
GameInputEvent
GameInputFinger
GameInputHand
H264Level
H264Profile
H264VideoStreamSettings
JSON
NativeWindowRenderMode (AIR 3.0 only)
SoftKeyboardType (AIR 3.0 only)
Stage3D
StageText
StageVideo (all devices support added to AIR since AIR 3.0)
StageVideoAvailabilityEvent (added to AIR since AIR 3.0)
TextInteractionMode
TouchEventIntent (AIR 3.0 only)
VideoCodec
VideoEvent (added to AIR since AIR 3.0)
VideoStreamSettings
VisibilityEvent
X500DistinguishedName
X509Certificate

Methods:
Sound.loadCompressedDataFromByteArray()
Sound.loadPCMFromByteArray()
System.pauseForGCIfCollectionImminent()
DisplayObjectContainer.removeChildren()
Capabilities.hasMultiChannelAudio()
ByteArray.toJSON()
Date.toJSON()
Dictionary.toJSON()
XML.toJSON()
Matrix.copyColumnFrom()
Matrix.copyColumnTo()
Matrix.copyFrom()
Matrix.copyRowFrom()
Matrix.copyRowTo()
Matrix.setTo()
Matrix3D.copyColumnFrom()
Matrix3D.copyColumnTo()
Matrix3D.copyFrom()
Matrix3D.copyRawDataFrom()
Matrix3D.copyRawDataTo()
Matrix3D.copyRowFrom()
Matrix3D.copyRowTo()
Point.copyFrom()
Point.setTo()
Rectangle.copyFrom()
Rectangle.setTo()
SecureSocket.addBinaryChainBuildingCertificate()
Vector3D.copyFrom()
Vector3D.setTo()

Package functions:
flash.crypto.generateRandomBytes()

Properties, constants:
Camera.position (AIR 3.0 only)
Event.TEXT_INTERACTION_MODE_CHANGE
MovieClip.isPlaying
NativeWindow.renderMode (AIR 3.0 only)
NativeWindowInitOptions.renderMode (AIR 3.0 only)
NetStream.mediaTypeData (added to AIR since AIR 3.0)
NetStream.videoStreamSettings
SecureSocket.serverCertificate
SoundCodec.PCMA
SoundCodec.PCMU
SoundMixer.audioPlaybackMode (AIR 3.0 only)
SoundMixer.useSpeakerphoneForVoice (AIR 3.0 only)
Stage.stage3Ds
TextField.textInteractionMode
TextField.textInteractionModeChange

And some requiring Flash Player 12 =) I think it’s just a typo:
Graphics.cubicCurveTo()
GraphicsPath.cubicCurveTo()

And Proxy class became top-level (was in the flash.utils package)

Found a typo? Please, highlight it and press Shift + Enter or click here to inform me!