We will not be able to include trend lines / financial scroll functionality for the Q1 version of the Silverlight control -- nevertheless we will forward your feedback to our developers for future consideration.
At this time we cannot commit a specific timeframe when beta version will be available but we will do our best to have some bits ready for preview around February.
the Telerik team
Check out Telerik Trainer
, the state of the art learning tool for Telerik products.