Microsoft has updated Windows 10 Mobile Build 14267.1004 for the Lumia 950, 950 XL, 650, 550; along with Xiaomi Mi4 and Alcatel Fierce XL.
In this Windows 10 Mobile Preview, a remarkable update for Lumia 550 because of last update, it cannot be charged via USB connection. Another notable update for People app that brings back the history feature, for a given contact you communicate with, you can view the interaction, whether by today, yesterday or last week. Currently, we can’t see Skype messages in history, but will be solved in a future update.
Errors related to Visual Voicemail notifications has been solved. For Windows 10 Mobile Preview download, you can update via your device by following Settings> Update & Security> Phone Update.
Note that the when using Continuum on the Lumia 950 XL, trackpad feature is not working as expected.