The upgrades and additions include a soft keyboard, support for third-party keyboards and widgets that include an analog clock, calendar and a music player.
The new SDK contains both Android versions 1.1 and 1.5 and future SDKs will follow suit with multiple platforms available. The blog plans to feature upcoming articles on various tech elements of the OS, according to the UK site The Register.
The Android marketplace has appeared more open to adult-leaning applications as an alternative to the very restricted iPhone, though only soft-core apps are allowed, as recently reported by AVN.com.
If you're a developer game for a sneak peek, download the SDK version of Android 1.5 here.
Among the companies that already offer or will offer Android-based phones this year are T-Mobile, Sprint, Sony Ericsson and Motorola.
Also in the works for 2010 are netbooks running the Android OS.