We are in talks with several parliament administrations, "Parliamentary Monitoring Organisations" and NGOs in multiple countries. Our goal is to integrate more parliaments (from city councils to the EU Parliament and additional national parliaments) step by step with the help of local partners. As soon as we have news on this we'll communicate that via Twitter (@OpenParlTV).
Furthermore, Open Parliament TV is a decentralised concept: besides the integration into our platform, people can use our openly licensed technical components to start operating their own Open Parliament TV platforms. Via Open Data APIs the different platforms would still be connected and searchable beyond the boundaries of specific instances.