Microsoft Remote Desktop app for iOS, OS X and Android

“…Further, with Windows Server 2012 R2 Microsoft is introducing the Microsoft Remote Desktop app, available for download in application stores later this month, to provide easy access to PCs and virtual desktops on a variety of devices and platforms, including Windows, Windows RT, iOS, OS X and Android…”
Source: http://www.microsoft.com/en-us/news/press/2013/oct13/10-07hybridcloudpr.aspx

Also see the blog post for more info: http://microsoftplatform.blogspot.nl/2013/10/microsoft-to-introduce-remote-desktop.html