Is There a Change in Ptf?

i know that you wrote a blog post in two thousand 11 about dealing with ptf and best practices. Yet on our blog on ons a, you wrot, we can index pt fs now,. Like the blog post is announcing that ptf can show up in search results. We can index them. The result shows up like this. An not much has changed in the result itself, like it still is, like why this is a previo of a p d f. That seems like change. But other than that, has there been any other i'm not aware of any changes.