I'm not sure what models these widgets will be available on. (I can only really speak on U.S. products)
My recommendation would be to contact the Samsung customer service center in your region to inquire on specific widgets. They'd be able to address your inquiry better than I would.
Hi, i have just successfully got my 8000 B series Samsung onto internet TV using the wireless dongle. I have u tube and a host of widgets on screen but cannot find the BBC i player or Love Film. How do i get these?