Last covered here, a month ago, Twitter's new PWA app status on many platforms has meant that the company has been able to roll out updates server-side. And a big one hit last night, appropriately - 'night mode', picking up a Windows 10 Mobile phone's system theme status and setting Twitter accordingly. Or you can toggle it manually. All rather excellent, though the big downside of using PWA tech for the Windows 10 UWP app is that there are no push notifications (anymore).
Heading into the Twitter PWA as normal, it automatically switches to night mode, picking up my system theme in this case; (right) note the manual toggles for night mode and also 'Data saver', restricting the media content shown inline.
Twitter PWA is also a 'Share' target these days, so you can share to it from other applications under Windows 10 Mobile; (right) Tweeting away (as part of a share from Edge), note the newish 280 character circle indicator, top right. This fills up as you type....
As I commented before:
It does the job, but it's not battery efficient and there's no integration with Action Center. Can notifications be somehow added in a way that's compatible with Windows 10 Mobile Edge? I'm not so sure. Which is why this is definitely a downgrade for most people.