New in Delphi 11 is the ability to adjust the date and time simultaneously on the TDateTimePicker. This will allow you to edit a TDateTime with a single TDateTimePicker instead of two.  See it in Action.

With the release of Delphi 11, check boxes have been added to TTreeView. Check out this new capability and its associated changes.

Newly added in Delphi 11 to TCustomComboBox are the AutoDropDownWidth and DropDownWidth properties. These are super helpful if you want to have long items visible in the drop-down window.  Watch this to see them in action.

In Delphi 11 we have some additional properties on TCustomGroupBox, they are DefaultHeaderFont, HeaderFont, and ShowFrame.  Find out how they work here.

The loading time of the options screens for both the Tools and Options menu has been greatly improved. Check out by how much.

New in Delphi 11 is the EditMargins property on TCustomMemo. You will find this on TRichText and TCustomMemo (as well as their data-aware cousins). This allows you to define the left and right margins within a memo.  Watch on YouTube.

New in Delphi 11 is the design-time previews of VCL styles. This is going to make it much easier to take advantage of styles within your applications and customise them on a per-control basis.  Learn all about this new Delphi feature here.

Delphi 11 adds some fantastic additions to TRichEdit (and TDBRichEdit), including URL detection and spell checking.  Learn how they work in this video.

In this video, we see how Delphi 11 adds a new VCL control, TDBLabeledEdit. This could make arranging data-aware input forms easier.

New to Delphi 11 are form designer guidelines for FireMonkey. They have some interesting differences from the VCL guidelines that you should probably be aware of - find all about them in this video.