The primary API features of this release are:
- NFC Peer-to-Peer API, allowing applications to share files and other data through NFC technology initiated communication with Bluetooth® handover.
- FM radio API, which is designed to give applications the ability to manipulate FM tuner settings on BlackBerry smartphones with supporting hardware.
- Profiles API, which brings more Super App features to applications, allowing them to query current profile settings and adjust their own application behaviour accordingly; or, conversely, intelligently change the current profile to match the user’s current activities.
BlackBerry 7.1 OS will be available as an update for in-market devices running the BlackBerry® 7 OS, and will also be available on future BlackBerry smartphones that will be running v7.1.
Dowload BlackBerry Java SDK 7.1 here
Source: BlackBerry Dev Blog