Social media sites don’t remain static for long. What was once a feature is now completely different today, and new AI tools, creator features, advertising alterations and content controls are changing how businesses communicate online.

Instagram, Facebook, TikTok, LinkedIn and Threads have experienced a number of significant changes in September 2026. These shifts aren’t just about features; they can impact content creation, distribution, and discovery strategies for marketers and creators.

TikTok Turns Comments Into a Bigger Content Opportunity

TikTok has made the comments interactive with new features. The platform has added Voice Comments, Polls, and Carousels since September, which provides additional means of engaging in discussion around videos. Voice Comments lets users record audio comments up to 60 seconds long in the comment section.

With this development, the comment area is no longer restricted to the use of short reactions. These tools can help brands and creators foster discussions and make their content more interactive.

Most users have said that LinkedIn is being more active in AI-generated content.

LinkedIn has been continuing its push against what it calls “low quality or generic AI-generated content. The platform said in September that its new actions had cut down on the views of content that its algorithms labeled “AI slop” by 40%. It also claimed that over a million members have taken advantage of its “Seems Like AI Slop” feedback mechanism since it introduced it in August.

The message is getting through to businesses: Just churning out a ton of posts generated by AI isn’t sufficient. Original insight, work experience, helpful information and real dialogue are still key to quality content.

LinkedIn Expands Verification Features

This month, another key area for LinkedIn is trust. On September 23, LinkedIn announced the new functionality for LinkedIn members and businesses to verify themselves. The company said over 115 million members have been verified and new opportunities have been provided for professionals and businesses to enhance workplace and identity credibility.

The fact is that for recruiting firms like JLL, branding, partnerships or thought leadership, it is becoming increasingly important for companies to have their identities verified on LinkedIn.

Meta has further extended its AI capabilities across its platform.

AI is among the themes of Meta’s announcements for September. The company unveiled Muse, a personal AI agent that can execute tasks and work across different connected apps, with user consent, on Sept. 8.

In addition to announcing new AI glasses products and features, Meta revealed at Connect 2026 that Muse is on the way to their glasses.

The shifts highlight the evolution of social platforms from feeds and messages to AI-driven experiences that bridge content, communication, and everyday tasks.

Threads Continues to Expand

In addition to its text-based social experience, Threads is also evolving beyond that. In September, Meta launched a new toolkit for creators and listeners to create podcasts, and other platform updates are providing businesses with additional ways to leverage Threads as an independent channel.

For marketers, it’s not just about having to be more attentive to Instagram’s Threads – it’s about a platform building its own creator and business market.

What Do These Updates Mean For Marketers?

The single largest takeaway from September is that social media is becoming a more interactive, authentic, AI- and trust-driven experience.

Don’t rely solely on one feature or algorithm assumption for your business strategy. Content should, on the contrary, be valuable, engaging, and tailored to the platform-specific tools.

Comments, polls, professional credibility, AI workflows, and community engagement are increasingly important components of the social experience alongside the importance of short-form video.

They can keep changing, but one thing will stay the same: brands that are aware of the changes and adapt their content strategy to them will be in a better place when the next change occurs.

FAQs

1. What are the key changes to social media in September 2026?

Some of the significant new features in TikTok, LinkedIn, or Meta are the new AI content quality checks, the comment features, and AI verification tools on TikTok, AI content improvements across LinkedIn’s platforms and devices, and more.

2. What are the new features that TikTok is offering in 2026?

To add more expressive and engaging aspects to comment interactions, TikTok rolled out Voice Comments, Polls, and Carousels.

3. Why is LinkedIn turning to AI-generated content?

The website LinkedIn is trying to do more and more to curb machine-generated low-quality posts and encourage more real professional discussions, the company states.

4. Which of the following is NOT a part of Meta Muse?

A personal AI agent introduced by Meta, the goal of Muse is to help users achieve tasks and take action based on their goals, all while maintaining control over access.

5. What needs to be done about the social media change in business?

Platform changes need to be tracked and followed up with specific platform features, and using original and useful content is essential, while the focus on the audience’s behavior should not be solely on platform tactics.