xamarin forms on wpf is now official, https://docs.microsoft.com/en-us/xamarin/xamarin-forms/platform/wpf
we need to support telerik on there aswell..

On UWP and Android the item can be swiped beyond the SwipeOffset property. Add option to restrict the swiped distance to the SwipeOffset value.

In Xamarin Forms there is a serious need for a Rich Text Editor control that would allow you to do this such as highlight text, apply fonts, styles etc. I think a tool like this is in great demand among Xamarin developers. Currently there are some Open source controls that have implemented these features however they have not been maintained and cannot be relied on for enterprise solutions

The purpose of this item is to track demand for support of the MacOS platform in the Telerik Xamarin controls. 

https://docs.microsoft.com/en-us/xamarin/xamarin-forms/platform/mac

Add controls to selecting dates/times that also support null or blank values.  Currently the DatePicker control that is provided as part of Xamarin Forms doesn't allow for a null or blank date.
Provide the ability to select date and time in single UI.

Provide support for Interactive Forms (AcroForms) in the PDF Viewer for Xamarin.

For detailed information on Interactive Forms concept check below: 
https://docs.telerik.com/devtools/document-processing/libraries/radpdfprocessing/model/interactive-forms/overview

Add events to handle when listview cells are unloaded/recycled and prepared.

Add support for tabs that cannot be selected

A common scenario for the Chart is to have several Y-Axis, where some could be on the left, others could be on the right side of the Chart.

a new component - Image viewer.
this component will take as source images meta data and show images gallery, with view / templates.
(carousel / grid for instance), 
allowing tap to zoom full screen and drag to exit zoom

In Xamarin.Forms, there is no multiline text box editor in RadDataForm.

Add functionality to slide through the items like in a SlideView/Carousel.

The TabView control should support a swipe event to change the active item. Similar to the ListView with the IsItemSwipeEnabled-property.

Add support for Jump list in grouped scenario to simplify navigating between items

Currently, there is no ItemTemplate for the SegmentedControl, therefore we need to use an IEnumerable<string>.

Please add support for ItemTemplate, or DisplayMemeberBinding property, so that we can bind to an IEnumerable<T>.