Ian Anderson of fRoots posted the list I quoted on uk.music.folk recently; he gets advance notice of such things. The BBC4 site has a little information, but I haven't found any about the later programmes in the series yet. European Roots: Nitin Sawhney is featured on the Jazz page, but at present the link to details about it actually goes to something about Jeff Buckley. I expect they'll fix it in time.