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![MKBHD Avatar](https://lunarcrush.com/gi/w:24/cr:twitter::29873662.png) Marques Brownlee [@MKBHD](/creator/twitter/MKBHD) on x 6.2M followers
Created: 2025-07-18 16:56:34 UTC

🚨 New YouTube Feature Alert 🚨 

Title AND Thumbnail A/B testing is starting to roll out 🙌🏾

![](https://pbs.twimg.com/amplify_video_thumb/1946249674018398222/img/p7ndHgkCB1gBS_ou.jpg)

XXXXXXX engagements

![Engagements Line Chart](https://lunarcrush.com/gi/w:600/p:tweet::1946252770685653300/c:line.svg)

**Related Topics**
[ab](/topic/ab)
[youtube](/topic/youtube)

[Post Link](https://x.com/MKBHD/status/1946252770685653300)