Hello,
Thank you for contacting us.
Our plans are to introduce several new skins with RadControls for ASP.NET AJAX Q2 2008. If none of them answers your requirements you can continue using the Default2006 skin as an external skin as it will no longer be available in Telerik.Web.UI's assembly.
If you have other questions, do contact us again.
Kind regards,
Sophy
the Telerik team