EOS.IO 3.0的新功能包括交易預設，對于我們未來的區塊鏈業務領域來說，這是一個非常獨特而且有趣的新功能。

? ? ? ?這個功能讓我們能夠根據用戶注冊類型來創造預設的交易。想象一下，你是去中心化的Netflix（著名境外收費視頻網站），在大多數區塊鏈平臺上，用戶們如需支付費用，就不得不登陸平臺。但是在我們的新版本中，你可以預設交易，然后在特定情況下，你的費用會被自動支付。還有密碼找回功能。在區塊鏈的世界中，你丟失了你的密鑰，你的錢就沒了。沒人喜歡這樣。在我們的平臺上，你可以通過其它手段或者社交互動媒體賬戶找回。這是一種植入于我們平臺中的圖形軟件，它對于水平技術能力是非常重要的。

它能夠創造重新被主鏈接納的側鏈。系統中還有500個交叉區塊，這是我后面也會講到的，他們保證了我們平臺的性能。此外，我們的新平臺還有很多很多的新功能會上線。除了核心平臺之外，我們現在還在致力于開發工具，系統生態的研發。

我們的努力方向主要有兩方面，一是文件改進，Github建設，另外就是智能合約模版建設。模版建設主要基于Bootstrap， 從而能夠在未來讓開發者們去開發各種實時及實際應用。我真的要鼓勵在座各位中的開發者們或者對于開發有興趣的同行們對這頁幻燈片拍一張照，因為這頁幻燈片上的這個鏈接是關于如何進行實際應用開發并將其部署到EOS測試網絡的入門教程。這個教程本身是非常簡單，非常使用。在學習完這個教程以后，你就會知道如何操作了。

同時，我們還有內容整合圖書館。一段時間之前，我們開發了一個EOJS ECC， 這是一組圖形化低端圖書館，它提供了一系列圖形功能。在此之上，圖書館會創建EOJ，這是一個非常低端化的圖書館，它能讓開發者和EOS測試網絡進行互動，在將來，它還能讓開發者和公共網絡進行互動。有人也已經開始開發EOJS Estore，這些是高端的應用，它們可以讓那些即使是不熟悉加密技術的人們也可以加入進來，讓那些即使不是很熟練的開發者們也可以開發應用。接下來我要建議大家也把這個頁面拍一張照片，因為通過這些主要鏈接你可以看到更多關于我們的技術的信息。

這是公告原文地址https://steemit.com/eos/@eosio/dawn-3-0-alpha-announcement

As many in the EOS.IO development community are aware, we've been working since December on merging two lines of development, Dawn 2.x and Dawn 3.0. The merged code base is now stable enough to make public as an Early Alpha and will now become our Github master branch. The prior master will be renamed “dawn-2.x” and will continue to be available as a non-master branch.

Community developers will notice that the next time they “git pull” from Master, they will obtain the new Dawn 3.0 code. Those wishing to continue to pull the Dawn 2.x code that connects to the current TestNet can do so by following instructions in the new readme.md, being made available at the same time as the re-mastering.

Please note that the Dawn 3.0 code is still in Early Alpha and is not compatible with the current block.one-provided public TestNet; it will not be available in a public TestNet until the end of Q1 2018. In the interim, developers may create their own testnets with the new Dawn 3.0 code. As a reminder, Dan Larimer and the development team have changed the way we forecast development. This means we won't be announcing the date for the Dawn 3.0 Testnet until the timeline is close enough for us to have high confidence in its capabilities.

The current public TestNet at “https://testnet1.eos.io” will continue to run the Dawn 2.x software until the release of the Dawn 3.0 Testnet, and will then be retired.

Smart contracts written for the Dawn 2.x codebase will need to be revised to work on the new 3.0 codebase and take advantage of the new features.

Major changes in Dawn 3.0 include changing “eos” to “eosio” in all locations throughout the code. We have also renamed "message" to "action", and removed the need for developers to manually specify 'scope'; all scope specification is now automated.

Additional new features in the Dawn 3.0 Alpha Release include: deferred transactions, staking pools, a new currency contract, and a new emerging token standard. A complete list of new features will be included in the 3.0 Final Release notes, expected by the end of Q1 2018. A complete list of EOS.IO Software Releases can be found here:https://github.com/EOSIO/eos/wiki/Releases

只有退潮了，才知道誰在裸泳。現有個區塊鏈價值探討微信圈，感興趣的伙伴可以添加私人微信bitebi007，備注?區塊鏈。