Man, the folks over in China sure do get builds of the mobile OS at a breakneck speed. Windows 10 for Phones build 12531 is in the news at the moment, with a bunch of leaked screenshots now available.

Now available, and providing us a look at several new options and features in the operating system.

Microsoft is apparently busy on adding a bunch of new features to Windows 10 for Phones, with the intention of improving the user experience. A lot of these new options seem to be at an advanced stage of development, meaning we could get our hands on them in the very near future.

The familiar old ITHome [Only registered and activated users can see links. ] this new gallery of screenshots:

<dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl><dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl><dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl>
<dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl><dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl><dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl>
<dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl><dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl><dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl>
<dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt></dl><dl class="gallery-item" style="box-sizing: border-box; margin-top: 10px; float: left; text-align: center; width: 191.390625px; color: rgb(51, 51, 51); font-family: 'Roboto Slab'; font-size: 14px; line-height: 23.1000003814697px; margin-right: 0px !important; margin-left: 0px !important;"><dt class="gallery-icon portrait" style="box-sizing: border-box;">[Only registered and activated users can see links. ]</dt>

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And as can be seen from the collection above, the Windows 10 browser user agent now comes with support for the Android Webkit browser version 4.2.1.

Spartan will still ship as the final choice, but more options like this are welcome nevertheless.

A few new visual tweaks are also included, and the Photos app also gets several new options, mostly related to better image organization and management. Speaking of photos, the thumbnails for the contact photos are now rounded.

Much like how they are in the desktop version of Windows 10.

A new contact manger also seems to be in, complete with an alphabetical index in the center of the screen to make it easy to find a specific person. The integration of social network contacts will allow the ability to send people messages via dedicated apps, albeit from this list.

These leaked images, obviously, are in Chinese, but we should get a better idea of these new options hopefully in the next Windows 10 for Phones preview version that goes live in the coming weeks.