What does this mean for you?
- Simplified resource deployment to SharePoint CDN's. This means you can by simple means deploy your resources needed for your webpart to a O365 integrated CDN.
Site Collection App Catalogs
- Site Collection App Catalogs should now be available on all SharePoint tenancies, this means you can now decide which Site Collections should have the possibility to install certain apps.
More about the tools to setup Site Collection App Catalogs you can find here: SharePoint Online PowerShell.
- A few changes has been made to the libraries and tools used for developing SPFx webparts, changes and release notes can be found here
Now available: Simplify deployment of your #SPFx parts and extensions with SharePoint Framework version 1.4, which includes new asset packaging capabilities. Explore new site collection app catalog deployment options. https://t.co/mEbkGucKiG pic.twitter.com/sD3ED0Xwan— Office Developer (@OfficeDev) December 7, 2017