Another rich set of blogs posts, covering XE8 features but not only. 

More General XE8 Information

Interview with John JT Thomas on RAD Studio XE8 at www.learnxpress.com/rad-studio-xe8-john-jt-thomas.html

Replays of the launch webinar available at forms.embarcadero.com/WindowsAndBeyond_AnnouncingRADStudio

Where are Delphi developers? David I answers at community.embarcadero.com/index.php/blogs/entry/where-in-the-world-are-programmers-using-delphi

Where should you ask XE8 questions. Find out at community.embarcadero.com/index.php/blogs/entry/where-you-should-post-bug-reports-ask-questions-and-have-conversations-about-our-software-development-tools

A great guide to iBeacons (not RAD Studio related) at www.moblized.com/blog/the-business-owners-guide-to-ibeacons-infographic

How Internet of Things Affects Business App Developers (by Brian) at appdevelopermagazine.com/2683/2015/4/27/How-the-Internet-of-Things-will-Affect-Business-App-Developers/

Blogs on XE8 Technical Features

Sarina on using the MapView component on mobile at community.embarcadero.com/index.php/blogs/entry/working-with-the-new-mapview-on-ios-and-android-with-rad-studio-xe8

Premium FireMonkey styles at community.embarcadero.com/index.php/blogs/entry/premium-firemonkey-styles-for-rad-studio-xe8

Hotfix for missing SQLite files at cc.embarcadero.com/item/30197

Using interstitial ads on Android (from Daniele Spinetti) at www.danielespinetti.it/2015/04/how-to-use-admob-interstitial-ads-with.html

Anatomy of a FMX app (very nice summary) at www.fmxexpress.com/anatomy-of-a-delphi-xe8-firemonkey-app-on-android-ios-windows-and-mac/

Another post you can forward to your .NET friends it this one on migrating from C# to Delphi at www.fmxexpress.com/ten-tips-for-migrating-from-c-and-net-to-multi-platform-object-pascal-and-delphi-firemonkey/

Unit testing with TestInsight at parnassus.co/unit-testing-with-testinsight/ (not strictly XE8, but very nice overview)

Things Jeroen learned in the Google+ Delphi Community about XE8 at wiert.me/2015/04/15/delphi-xe8-things-i-learned-from-the-first-week-of-g-reading/

Malcolm on AppTethering (a great overview) at http://www.malcolmgroves.com/blog/?p=1842

And the UK Conference

Finally, I want to remind any of you leaving in the UK (or nearby) of this great event coming up next Wednesday in London that I'll also attend, see forms.embarcadero.com/EM15Q2GBSpringDelphiCommunityConference