Firemonkey version of VirtualTreeView

Question

Does anyone happen to know if there is a Firemonkey version of the popular VirtualTreeView in preparation? Also, has anybody collected some experiences with porting custom controls to Firemonkey and can estimate how much work it would be to port the virtual tree view to Firemonkey? We need this control and switching to Firemonkey is only an option if we can get this control to work.

Thanks!