Somewhat related to this, Dan said yesterday on Slack:

"Hey, we havent provided any code yet as we arent done with the poc but for full cross chain enablement there will need to be some code added to ethereum for xbridge to function fully"

So as far as I can tell, Ethereum is not yet "blocknet-enabled," but Blocknet is currently working with Ethereum on making this happen.  I expect that once Ethereum's codebase is updated with the "xbridge" code, then at that time there will be some announcement (but that's just my guess).  

While that doesn't answer your question, I hope it provides some context.