Power BI for Office 365

It appears that Power BI for office 365 has been deprecated. I launched an Office 365 tenant yesterday but did not have power BI in the site content. Instead it appears as an app separate from SharePoint.

My questions are:

i) Going forward, how do we handle collaboration ? Is there a way to continue to share dashboards using SharePoint sites?

ii) How do we integrate AD authtentication and groups if we have to share dashboards outside of SharePoint.