Android 2.2 Froyo was released earlier today and a Android 2.2 SDK was also available for downloads. However, before the apps can even be created, Nexus One users will get to taste the Android 2.2 OS.
Nexus One users will be able to upgrade to Android 2.2 Froyo later today (see update). The update will be available Over-The-Air (OTA). Android 2.2 will also be made available for Motorola Droid customers in near future.
Update: Even though the source confirmed that Nexus One will receive an Android 2.2 OTA update today, there are varying reports which say that the update will be made available in June, we will update the post when more confirmed details becomes available.
Update 2: The Official Google IO account on Twitter has confirmed that the Froyo update for Nexus One will be available soon. The update says “Froyo on Nexus One soon! (next few weeks)”. You can read the update here.