Hello Martin de Ruiter,
No, the feature is not logged in PITS yet.
We have been researching and thinking about the feature for a long time and stumbled upon various limitations.
The most important one is that if we decide to integrate the feature into RadComboBox it will lead to a lot of changes to the control itself as it now does not allow such a complex behavior. Additionally the rendering is extremely different and we may end up with a different control if we make the changes; not to mention that it is unclear if the old functionalities will be able to exist after the modifications.
In this sense, we think that such control is better designed as a separate piece of functionality/behavior. Still, for now, we do not have plans for implementing this control.
On the other hand, we made a lot of improvements to RadComboBox' autocomplete functionality. You will basically get the same behavior as in the suggestion box discussed in this support thread except the 'close'-boxes - you will be able to select different Items only by clicking, which will enable easier deletion. All of the improvements are now available through the latest internal build of Telerik.Web.UI and will be with the upcoming Q3 2010 release as well.
If you have other suggestions for improving the current autocomplete functionality of RadComboBox even further, please share them. We will be glad to evaluate and eventually implement them..
I hope this helps.
the Telerik team
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Telerik Public Issue Tracking
system and vote to affect the priority of the items