Google announced availability of the full SDK for Android 4.1, enabling developers to create apps for the planned Jelly Bean version of the platform.

The only device so-far confirmed to run the platform is Google’s own Nexus 7 tablet, which is reaching customers now.

Jelly Bean was announced at Google’s I/O developer event last month.

It will offer a number of new features for developers, including: expandable notifications, enabling apps to display “larger, richer” messages and with users able to initiate actions from the alerts; low-level access to platform hardware and software codecs; and network bandwidth management, to detect metered networks including tethering to mobile hotspots.

The company also announced new versions of its SDK Tools and a revision to its Native Development Kit, which it said “contain bug fixes only.”