In reply to Justin.

Hello Justin,

I knew about the Official WordPress.org Core blog already, thanks to WP Tavern (since none of the official WordPress.com related blogs/Theme Shaper/et cetera mentioned it as far as I know), but thank you for sharing the link for those who might not know about it already. ;)

As a WordPress.com user I think that WP Tavern does a good enough job keeping me updated on most things that I care about that are not mentioned at WordPress.com News, The Daily Post, Theme Shaper, et cetera so for me I do not really need to follow the WordPress.org Core blog or the various other Automattic blogs (Akismet, Polldaddy, After The Deadline, Gravatar, et cetera) as well thanks to WP Tavern. :)

About the demo, yeah, I think that they could do a better job of communicating (besides the things that they often forget to mention, you will also notice that many people's comments are not even responded to on various topics like the Twenty Fifteen announcement on the WordPress.org Core blog, even when simple and important questions are asked); but I think that WP Tavern will mention the Twenty Fifteen demo at some point so that other people will know about it, since the official WordPress blogs have not mentioned it so far it seems, which is another reason that I think WP Tavern should be an official WordPress blog and easier to find so that more people will know about it so that they can stay updated on things that are often not mentioned on the official WordPress blogs.

-John Jr