Build 21277 is out as an Optional Update

Also: features like the updated emoji picker, redesigned touch keyboard, voice typing, theme-aware splash screens, and others that were removed temporarily at the end of October will be returning for Insiders who install this RS_PRERELEASE build. However, please note some of these features will continue to be available only to a subset of Insiders and will get enabled for more Insiders over time.

This is the full quote.

JMO, I didn't take this to apply to the animation.

Maybe Eddie can clarify this.

Also, I didn't see any pop up animation when I got

21277. I also didn't see anything like Wolfboy

described, so call me confused about this.

I installed insider build 21277 on my notebook HP. I don't see any animations on that notebook that I see on my desktop PC. I guess it is because my notebook does not have a good display adapter that has the power to play any animations of this sort. It is integrated display adapter Intel HD3000.

@suat.cini, 

I have a desktop with Nvidia RTX 2060 and I don't see any fancy animation on that either, I just haven't seen what described on any of my 21277 machines.

Also: features like the updated emoji picker, redesigned touch keyboard, voice typing, theme-aware splash screens, and others that were removed temporarily at the end of October will be returning for Insiders who install this RS_PRERELEASE build. However, please note some of these features will continue to be available only to a subset of Insiders and will get enabled for more Insiders over time.

This is the full quote.

JMO, I didn't take this to apply to the animation.

Maybe Eddie can clarify this.

Also, I didn't see any pop up animation when I got

21277. I also didn't see anything like Wolfboy

described, so call me confused about this.

I installed insider build 21277 on my notebook HP. I don't see any animations on that notebook that I see on my desktop PC. I guess it is because my notebook does not have a good display adapter that has the power to play any animations of this sort. It is integrated display adapter Intel HD3000.

Believe you are correct. Seems to be the MS way, all or nothing. Similar to the blurry login issue that they still will not deal with properly. (gpedit on pro, registry edit for home).

Hey Johnny, Pauli says the same thing about the blur effect and I have Home edition on 3 laptops and I have never had to do a regedit to not have the blur effect at log in. I just turn off Transparency in Settings Personalization. I realize this means I have no blur or Transparency effect anywhere but I don't care for the effect anyway.

when you open the window it get a fade/bloom/macos effect

 Weird, I have 3 different machines at 21277.1000, I don't see this on any of the 3. 😊

I don't see the animation either FG, no big deal.

And 

It is very pronounced in my PC. It is as if a big meteor is coming on to me when I open a window. Any window, such as a folder window or System Properties window.

I guess you belong to the "chosen" subset of users 😉

As a consolation prize I have the new emoji picker :-)