Wizards announced today their new monthly segment titled Unearthed Arcana. So in their own words Unearthed Arcana will be a monthly segment from now on giving us an inside look at what “might” make it from the stages of playtest to book form one day. But they still want to get into our eager hands long before it sees print in book.

You can think of the material presented in this series as similar to the first wave of the fifth edition playtest. These game mechanics are in draft form, usable in your campaign but not fully tempered by playtests and design iterations. They are highly volatile and might be unstable; if you use them, be ready to rule on any issues that come up. They’re written in pencil, not ink.

The material presented in Unearthed Arcana will range from mechanics that we expect one day to publish in a supplement to house rules from our home campaigns that we want to share, from core system options such as mass combat to setting-specific material such as the Eberron update included in this article. Once it’s out there, you can expect us to check in with you to see how it’s working out and what we can do to improve it

So what is it they are giving us from the Eberron setting. RACES & Dragon Marks. This is great. Many people have been chomping at the bit for some Eberron races and now we have them in our hands. On a personal note of happy I now can compare my version of the Shifter to theirs and see how close we got.
I look forward to more of these updates month by month. So here you go if you want the link click here and get on over there and see what they have given us. Unearthed Arcana