Remember the Blueprint error screen? Instead of being blue, it's red now. Makes it a little bit easier to understand.
Also, the new look is here, with a brand new website as well. Great stuff!
Extension logo's get imported correctly now, as well as extension buttons in the /admin/extensions page. Routes and view controllers get added automatically as well.
The replacement of the placeholder is just a work in progress. I've also discovered a few more things about PHP now, including how to do variables and stuff.
Now the extensions admin page will show a logo of the extension instead of an icon. This is both on the manage extensions page and the page of the extension.