Microsoft continues to improve its latest Windows 10 OS. Insiders can get this release of Windows build 10558, so can you. I don’t know why people bother to try system which works 0.03% better than the old one 10240 (besides this is subjective!), but OK.
Here’s a list of improvements:
- new version of Microsoft Edge
- new Messaging and Skype Video apps
- Find my device settings using GPS/location info
- Edge browser tab preview
- New Registry Editor icon
- Spotlight feature for Enterprise Users
- Install apps to external storage
- Dark UI in Messaging app
- Safe to remove (USB drives) icon in system tray
- updated icons for Control Panel
The build syntax is:
MICROSOFT.WINDOWS.10.CLIENTPRO-CORE.TH2.10558.X64.OEMRET.ENGLISH.DVD-WZT
10558.0.150928-1738.TH2_RELEASE_CLIENTPRO-CORE_OEMRET_X64FRE_EN-US
Image below courtesy of Wzor

Here’s the download links:
Torrent magnet link: magnet:?xt=urn:btih:FF6C98DD6EF5FD926613DF48C5D3A5DD34739D22
[update 07-Oct-2015]
Screenshots of newer build of Windows 10 Pro Insider Preview Build 10551 appeared on the internet: 10551.0.150917-1700.TH2_RELEASE_CLIENTPRO-CORE_OEMRET_X64FRE_EN-US link