Will dashboard options change after domain mapping upgrade?

Two days ago, I changed my blog (http://martjeschrijft.wordpress.com) into a self-hosted domain (www.martjedoeve.nl). After that, a lot of dashboard options and functions were gone, such as several widgets, sharing options and follow buttons. I’m using the Suburbia theme.

I’m considering a paid domain mapping upgrade, so WordPress will be hosting my domain. Does anyone know if the original dashboard options I had will still be there? I can’t find it anywhere on the fora and tutorials..

Thanks a lot!