To put that in context, Meta threatened to block news content in Canada after the latter country's new Online News Act passed in Parliament, hence it's likely to significantly impact social media use in the region at large.

According to Meta:

"Today, we are confirming that news availability will end on Facebook and Instagram for all users in Canada before the Online News Act (Bill C-18) comes into effect. We have repeatedly shared that to comply with Bill C-18, which was passed today in Parliament, content from news outlets, including news publishers and broadcasters, will no longer be available to people accessing our platforms in Canada."

Indeed, last March Meta said it would be compelled to remove news content from its apps in response to the proposal, which, the proposal states, would cure imbalances in the local media market by ensuring no single company gobbles up the whole of the ad market share all to itself. Meta has countered for years that it doesn't actually need news content, thereby making the premise of the legislation incorrect, but Canada has opted to move forward with the proposal anyway, which would ideally see revenue from news content shared on Google and Facebook shared with local publishers.

Which is a flawed approach, although seemingly working in other regions.

A similar legislation was passed in Australia this year, which also led Meta to take a similar stance and strip away news content for Australians temporarily.
That was made following a re-negotiation of the terms of the proposed Media Bargaining Code, and subsequently, Australia's Treasury Department reportedly established more than 30 commercial agreements between Google and Meta with Australian news businesses, diverting over $AU200 million annually to local media providers.

There are precedents for such agreements; perhaps this is why Canada is now trying to get similar action. But Meta may be less willing in this case.

So, as of today, news content will soon be out on Facebook and Instagram, and links from publishers shared will also be out. Then it's negotiation to be done between Meta and the Canadian Government – though with news content now making up far less of the material shared on Facebook, Meta does seem to have the upper hand in this discussion.
The end result then will likely only end up being less distribution for news publishers till the situation is resolved one way or the other. Australia's local news ban lasted just over five days, but again, the situation was a lot different then, with news being a bigger element in overall Facebook engagement.

This one could go on for a lot longer, depending on how things play out.