TLDR: We improved the UI of the call to action at the bottom of the question page, so users can more easily access next steps (browsing the tags or asking a question) if they didn't find what they needed on that page.
There was already some text at the bottom of each question page, below the "Post Your Answer" button, inviting users to browse the tags or ask a question of their own, but it was extremely easy to miss (see the screenshot below, sorry about the image quality), which is why even long time users may not have been aware it was ever there.

So once a user scrolled down to dig into a question and its answers, the "Ask Question" button and clickable question tags were essentially no longer available, which could be a barrier to figuring out next steps for trying to solve their problem - especially for newer users who don't know where to look.
We decided to update the UI so that these options are readily available to users who have reached the bottom of the page, which is especially helpful in cases where a user may have spent time reading through multiple answers to a question only to find that none of them solve their problem.
If they come to the conclusion that this is not the right question for the issue they are facing and want to either explore additional questions in those tags or ask a question of their own, they can now see those options right in front of them, versus having to remember where to find them, and then scroll all the way back up.
As Marijn mentioned, this also helps to point newer users in the direction of asking a new question rather than posting their follow up question as answer, which is a mistake that sometimes gets made.