Official Amber channels checked by the team:
By far the most active community of Amberians and the easiest way to chat or give feedback to the developers directly.
Boasts of Amber Game news, fun memes, general crypto news and a treasure trove of Amber concept art and early ideas.
Amber news and announcements in TLDR form.
For a more businessy approach.
Some other sites and networks Amber is listed on:
Amber discussion in Korean.