The UltraTimeline control is one of the new controls being released with this month's NetAdvantage for Windows Client release. The new UltraTimeline control is joined by a new layout metaphor called the UltraTilesPanel (see a video of both here). However, the timeline control is what I'm most excited about.
A timeline control displays a data series across a period of time for different subjects. For example, in a scheduling scenario a subject is a person and the data series is the appointments for each subject. The timeline has a large number of uses with scheduling and resource utilization being at the top of my concerns.
The following image is a sneek peek of the UltraTimeline control. You can also see it in use in the video linked above):

I've been using Infragistics controls for years now. Of all the suites I've used Infragistics has been my favorite. Besides the product itself one thing I like is that I know what to expect about upgrades. There is a consistent schedule and a consistent upgrade/support fee every year. This makes the accountants happy. And it makes me happy, because it's no hassle come upgrade time. Infragistics continues to provide additional value every year.