The Mobile SDK 2.3 is out! This release includes significant updates for developers creating hybrid applications.
Cordova Plugins for Core Salesforce Specific Features
Salesforce specific functionality for hybrid apps are now available as independent Cordova plugins. Developers can consume Salesforce OAuth2 Identity, SmartStore Secure Offline Database, and Push plugins in the very latest versions of Cordova independent of Mobile SDK releases.
Push Notifications for Hybrid Apps
Hybrid mobile apps can register for push services defined in the Connected App policies and react to incoming notifications using a slightly modified PushPlugin, designed specifically to work with notifications triggered through force.com APIs.
SmartStore has new APIs to re-index existing soups and gather information about stored data.
Android Specific Updates
Reorganization of library projects within the repository.
iOS Specific Updates
64bit support for native and hybrid apps
Node Package Libraries
Source Code on Github