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Now, each of the blogs has its own RSS Feed at /rss.xml.
Now, all of the blogs have a dynamic sitemap with all the links (posts/pages/categories) present in the blog. When a post is published/updated or a category is created/updated or a new page is added/updated, the sitemap automatically gets updated. You don't have to do anything extra.
You can find the sitemap of any of the blogs at the /sitemap.xml route.
Now, you can change the font family of the blog. You can choose any of the fonts from Google Fonts and can apply it to your blog using the Font Family property in General Settings.
Until now, the author name is being fetched automatically from Notion. But now, you have the flexibility to choose whatever name you want. You can also choose the duration. Both of these are Select options now.