Last week (24. – 28. of September 2018) Microsoft Ignite 2018 took place in Orlando, FL, USA. There were several news and announcements regarding intelligent communication based on Microsoft Teams, Skype for Business (Server) and related technology and services.
You can find a link list of interesting sessions regarding Teams and Skype for Business, here and of course you can watch the recordings of the sessions on demand, if available.
In case you wan a bulk download of the contents, there is a useful PowerShell script you can get from the TechNet Script Gallery.