At least two of those are clearly evident on our devices. Now when you create a new email the To: line has a people icon that lets you jump to the People app for information and contact lookup.

The changelog mentions three new features to look out for, including:

Microsoft is starting to add more features to the Outlook Mail and Calendar apps for Windows 10. Version 17.7369.40418.0 is live for those in the Fast Ring on Redstone 2, which is ahead of Production/Release Preview and old Fast Ring at build at 17.7167.40818.0.

The other feature is somewhat obvious but much needed: users can now download all attachments in an email by selecting Save all attachments in the email. Previously, users had to save each attachment one by one.

We have not yet found how to switch to the People app from Mail and Calendar.

Seeing as these features are nothing too radical we should begin to see them push to Release Preview in the coming weeks assuming they do not rely on Redstone 2 OS changes. From the looks of it, it seems like Microsoft is about to start a new level of cross-app integration in Windows 10, which should bring back some of that old Windows Phone 7 and 8 feeling for those on Mobile.

Finally, the whole Office suite and Camera app were also updated although we have not spotted any new features quite yet.

Download Mail & Calendar from the Windows Store