Video Converter Software: Windows 10 build 10558 (leak)

Microsoft relased on 29th July the Windows 10 for PC devices. As we know, this journey has no end, as Microsoft revealed that will constantly update Windows 10 and the next major update is scheduled for next year, which codename's Redstone. Saying this, the Insider program is running and a couple of builds were released since RTM at 29th July (build number 10240).
Gabriel Aul, on twitter, revealed that no more builds would came out until 6th October, that will be held a conference (Microsoft will talk about Surface 4, Lumia devices (950, 950 XL and 550)) and Band 2, and we can presume a new build coming for Insiders on both platforms - for PCs and phones (build 10559 is flighting to internal Fast Ring).

The latest official PC build for Insiders was 10547, but thanks to Wzor, we now have access to build 10558 :)
This build was released internally on 28th September and brings some interesting updates. I don't have access to the changelog, although I have found some noticeable changes by-side other users.

New Messaging (with Dark UI theme) and Skype Video apps
New Find My Device feature, that periodically saves the device location using GPS
New icons on Panel Control, as well, a new icon for Safe to Remove (USB drives). The Registry editor has a new icon too.
You can now save yours apps to external storage
Edge browser tab preview

You can download the ISO from Mega, or CloudMail
File name: 10558.0.150928-1738.TH2_RELEASE_CLIENTPRO-CORE_OEMRET_X64FRE_EN-US
Only x64 is available.
(click on pictures to enlarge)

Messaging app

Settings: Find my device

This feature was already available of Phone devices. Now, Microsoft brings it to the PC version of Windows. I think is a good feature, specially for mobile devices such tablets and laptops. To configure it, go to Settings, then Update & Security and expand Find my device

Save your apps on...

Finally, you can now save your apps on other locations rather than OS partition. This option was available on Settings app on RTM, although was disable. I haven't tested it yet, I am just curious if you can save them on a USB flash for example.