WordPress developers continue to add more features to their Jetpack plugin pack.
The latest update comes loaded with Custom CSS support. This means that you no longer have to use child-themes or third party plugins to add a few lines of customized CSS code to the theme you are using.
The developers added:
Jetpack Comments got a nice UI improvement in this release: when you submit a comment, there’s no more annoying full-page load on jetpack.wordpress.com. Everything stays on your site :) Also, if you’re using the pretty (a.k.a. not “official”) sharing buttons, we’ve added share counts to the Twitter, Facebook, and LinkedIn buttons.