Microsoft has released a new Office 2016 build to the insiders

Today, we started rolling out a preview of our May 2016 feature update to Office Insiders. To get the update immediately, click File > Account > Update Options > Update Now.
Here's what's new in this release:
Improvements to Get & Transform: In Excel, it's now easier to create a query using options from the new Online Services category, including connectors for SharePoint Online and Exchange.

Send messages anytime: If you use Skype for Business, you'll no longer receive "this message can't be delivered" notifications when you send a message to someone who is offline. Instead, you'll see this:

More efficient online meetings: In Outlook, you can now pre-load attachments to Skype for Business meetings so that you can get started immediately. The attachments will show up in the meeting window automatically when the first participant joins the meeting.

  Office 2016 Insider Build 16.0.6965.2051 released