Alpha Release: Cycle 6 – 5th Alpha Preview / Release Candidate 0

We are releasing a new preview of Cycle 6 to the Alpha channel. This series of builds will be the next major feature release of the Xamarin Platform when they release to Stable later this year. These builds are also the first Release Candidate we are publishing as part of a newly launched RC process, which you can read more about here.

If you are used to the updater channels in Xamarin Studio and/or Visual Studio, simply switching to the Alpha channel and getting the latest content will give you the RC0 series of builds. To make it as easy as possible for Xamarin developers to participate in this first RC, we’ve also prepared special versions of our installers which will install the new RC0 build on your Mac and Windows machine.

Mac Installer  |  Windows Installer

Please note, to use RC0 to develop iOS applications in Visual Studio, you’ll need to install the release on both your Mac and Windows workstations.

The biggest change with the Cycle 6 builds is an overhaul of how Xamarin builds iOS projects on your Mac from Visual Studio. If you happen to experience issues with any of the RC0 products, please log a bug report


Known Issues 

  • [Xamarin.VS] – Xamarin.VS fails to log into build server on Mac machines using El Capitan GM (beta 1). 
  • [Xamarin.VS] – Right clicking build host in XMA connection dialog does not successfully open context menu.
  • [Xamarin.VS] – Breakpoint positions sometimes change when debugging Android applications with multiple breakpoints. 
  • [Xamarin.VS] – When deleting a theme with the Android Designer, it sometimes does not properly remove it. Applying the theme again may cause Visual Studio to hang/restart. 
  • [Xamarin.VS] – In some instances, the license window cannot be dismissed. 

Products Released


Upcoming Release Dates

Alpha – August 26th, 2015

Alpha 2 – September 2nd, 2015

Alpha 3 – September 19th, 2015

Alpha 4 – September 24th, 2015

RC0 / Alpha 5 – Today!

Future RC(s) – October/November 2015

Stable – Fall 2015

Preview: Xamarin Profiler 0.23

Xamarin Profiler preview 0.23 is now available for download! There have been a number of fixes since our previous preview, which have been noted below.

Please note that the Mac app bundle has been renamed (from XamarinProfiler.Mac.app to “Xamarin Profiler.app”), so the old version needs to be removed before installing this new update, so that Xamarin Studio prompts the user for the new location.


Issues Addressed

  • 33816 – Extended detail pan should now properly become greyed out in drill-down mode for the Call-Tree view.
  • 32405 – Cleaned up most instances of unknown classes showing in the ‘Summary’ and ‘Allocations List’ views.
  • 34390 – Graphs should now be properly selectable when running the profiler.
  • 33974 – Labels for .mlpd files should now correctly show when opening them.

Products Released


As with all our preview releases, this is not a product we officially support. If you encounter any issues, we recommend filing a bug in Bugzilla. You can also jump into the discussions on the forum thread posted below.

Preview: Xamarin.iOS support for iOS 9.1 Beta, watchOS2 & tvOS

We are releasing preview versions of Xamarin Studio and Xamarin.iOS with updated support for the recently released iOS 9.1 Beta 3. These builds also support watchOS 2 (simulator only) and tvOS (simulator and device only).

As with all our preview releases, this is not a product we officially support. If you encounter any issues, we recommend filing a bug in Bugzilla. You can also jump into the discussions on the forum thread posted below.


Known Issues

  • [Xamarin.iOS] – watchOS 2 and tvOS APIs are not final, some types might be missing or unavailable.
  • [Xamarin.iOS] – For device builds (both iOS and AppleTV) you must disable incremental builds in the project’s options.
  • [Xamairn.iOS] – Bitcode support is not enabled on any platform.
  • [Xamarin.iOS] – No storyboard support for tvOS projects with the iOS Designer or Xcode 7.1.
  • [Xamairn.iOS] – tvOS MetalGame template gives a System.InvalidOperationException on launching AppleTV.
  • [Xamairn.iOS] – watchOS 2 and watchOS 1 applications currently only work on watch simulators.
  • [Xamarin.iOS] – watchOS debugging is supported only for default mode in watch simulator.
  • [Xamarin.iOS] – iOS template projects currently work on 32 bit devices.
  • [Xamarin.iOS] – iOS SpriteKitGameTemplate sometimes gives build errors.
  • [Xamarin.VS] – Visual Studio support is not yet available.

Products Released