The tiles returned from the Bing rest imagery api are not using the latest road tile source. Customers are comparing our integrated maps to the Bing Maps website and complaining that our integrated maps are out of date. Microsoft has added "RoadOnDemand" as an imagerySet value to target the latest tiles. The currently implemented "Road" value is considered legacy.
Docs: https://msdn.microsoft.com/en-us/library/ff701716.aspx
Attached are images comparing the new Bing tiles and legacy.

Please follow this feature request already logged in our portal. 
https://feedback.telerik.com/Project/143/Feedback/Details/218677-map-add-the-canvas-modes-roadondemand-and-ordnanceservey-modes-in-the-bingrestm
Currently, you can implement custom map provider and hardcode the link addressing the RoadOnDemand service.

We will not add OrdnanceSurvey mode when we add CanvasModes and OnDemandmodes, as it requires more effort and different development setup.