This is it, it has just been announced: the preview of the next major version of Exchange and Skype for Business is now available (SharePoint will come later).
You can get the bits here:
- Exchange 2019: https://www.microsoft.com/en-us/download/details.aspx?id=57167
- Skype for Business 2019: http://download.microsoft.com/download/2/0/9/209372AB-F64F-4F04-8BDA-FBAB1C685BA3/W17_2044.76_Eval.iso
As part the new features/capabilities:
- Exchange 2019
- Exchange 2019 can be deployed on Windows Server Core (2016 or 2019), off course deploying on Windows Server with Desktop Experience is still available
- New search capabilities provided by Bing
- Capability to do not forward items
- Unified Messaging has disappear; if you are using the Exchange UM capabilities (with PBX or Skype for Business 2016), you will need to use Skype for Business 2019 with Cloud Voicemail or migrate to Office 365
- Skype for Business 2019
- Cloud Voicemail, to replace the Exchange UM role which disappears
- Cloud auto attendant in hybrid mode (not yet available in this released preview)
- Simplified experience for migration to Teams
Documentation is available at: