The first thing I did, after starting Android full-time, was to compile a list of sources to follow. Here's my list to keep updated on everything Android related:

Official sources

• Android Developers Blog
• Google Developers – Medium
• Google Design
• Google Developers – Youtube

News Digests

• Android Weekly
• Android Dev Digest
• Android Dev Weekly

Podcasts

• Fragmented
• Android Developers Backstage

Communities

• /r/androiddev
• XDA Developers
• +AndroidDevelopers Communities

Twitter

• Official Sources
• Developers and experts to follow

But if I had to pick one, the /r/androiddev community on Reddit is quickly becoming my main Android news source.