Our new Delta Engine website is now online: http://DeltaEngine.net
The website is still under construction, you can still use your old account, but we also now got Single-Sign-On with Facebook, Google, Twitter, Windows Live and LinkedIn and Payment via PayPal (Amazon Payment and Google Wallet are coming soon). There is actually no code to download yet, but we are working hard this week to provide the initial Delta Engine repository for both C# and C++.
Stay tuned, we plan to release updates every week!