NFC P2P is ready for Android 2.3

The Android 2.3 source code has released!

I was wondering about one thing. We all know there are several mode in NFC application. Why the Google only release three classes in NFC package? But when the source code released, I think there must be  some plan in Google's mind.

We can check the code here...(a little slowly, does everyone want to know more about NFC like me?)

http://android.git.kernel.org/?p=platform/frameworks/base.git;a=tree;f=core/java/android/nfc;h=83d4f7c43e454771ba4033363114bfba041605d8;hb=6471cd5f7d0125713081c9be4772922eedd2a904

There are a lot of difference from the SDK API. The "Peer to Peer ", Raw Tag/NDEF tag write/read function are all ready to go.

Why does Google reserve so much functions? Is the hardware not ready? or they have many NFC service on developing..