Microsoft on Wednesday released a new Technical Preview build (10061), making many improvements to its Mail and Calendar apps, along with improvements to the Start menu, task bar and action center. This update comes on the heels of an update Microsoft introduced late last month, which included the company’s new Spartan browser.

The biggest and most noticeable changes happen in Mail and Calendar; if you’ve used Microsoft mobile apps, the new additions will feel wonderfully familiar. For example, Mail now includes customizable swipe gestures, allowing you to swipe right or left to take a specific action (delete, flag, move, etc.).

Microsoft has introduced some terrific changes to its apps over the past few months, and Mail is yet another example of Microsoft flexing its design/functionality muscle.

Additionally, the new build also includes a new black system theme across the Start menu (which can now be resized), task bar and action center; Microsoft also said the first two have been imbued with some transparency for a cleaner and more modern look. And like Apple’s Yosemite update, the new Windows 10 build has support for AutoColor, which pulls the primary color from your desktop background. It’s a small touch, but a welcome one nonetheless.

Other features include improvements made to Continuum, task view and virtual desktop. Gabe Aul, the lead of the Windows Insider Program, also highlighted a number of issues that have been fixed in the newest build, along with a list of issues that Microsoft is aware of, but haven’t yet been addressed. You can see all of that down below.

Microsoft is holding its BUILD conference next week, so perhaps we’ll learn even more information about Windows 10. As of now, the company is aiming to release the update sometime this summer.

Here are some issues we fixed in this build
  • We have fixed have fixed the issue where Indexing of new email in Outlook was not working.
  • We have fixed the issue with Hyper-V preventing you from enabling it.
  • Visual Studio will no longer crash when creating a new Universal app project.
  • We fixed a few issues in Project Spartan. You can now double-click on the titlebar to maximize. We have also made some tweaks to the alignment of the Favorites Bar so that the text and icons no longer appear partially below the bottom of the Favorites Bar.
Here are some known issues for this build
  • We know this one will be a bit painful but there is a bug with this build in which Win32 (desktop) apps won’t launch from the Start menu. The workaround is to use search to find and launch these apps and pin them to your taskbar for quick access.

  • The Windows Store Beta (grey tile) and Project Spartan get unpinned after upgrading. You can re-pin them to your Taskbar from All apps on your Start menu.

  • The version of the Mail and Calendar apps included in this build (17.4008.42281.0) have a known issue that causes every typed letter to appear twice. Which might be funny if it weren’t so irritating. We have fixed this issue with updated versions of the apps (17.4016.42291.0) available in the Windows Store Beta (grey tile). If you don’t open the Mail and Calendar apps within the first 15 minutes after logging in to your device for the first time after upgrading and your device is connected to the Internet, the apps should update automatically. You can also go into the Store Beta and check for updates manually at any time.

  • Cortana will highlight things it will be able to help users with, but some of these features are not yet implemented and we are working to deliver them soon.

  • There is a known issue where you might see a black screen with only your mouse cursor during login/logout. We have a fix for this coming via WU.

  • Downloading music in the Xbox Music and Music Preview apps is currently broken. We also have a fix for this coming via WU.

  • When you minimize an app playing audio, it may stop playing once its minimized.

  • In Project Spartan, no selection highlight appears when selecting text in the address box. You can right click in the address box to cut/copy/paste and it will work as expected. We also have a fix for this coming via WU.

  • Magnifier does not work when you put it into docked mode. We will also have a fix for this coming via WU.