The release includes some requested updates for the extensibility API: • Cart.getLatestAddition() -- gets item data for the item that was last added to the cart (eg if you want to do a popup) • Environment.addTracker() and triggerEvent() -- for adding and triggering custom events for custom trackers • Cart.setTransactionBodyField() -- to set a custom transaction body field (eg a custom delivery note) • Search component! Grants access to getUrl() which provides a generator for your site's item search API

I probably won't write any articles about them -- I'm going to be working more closely with the tech writers, though, to see if we can get the sort of content I would normally write put into the help center instead

If a container template is missing, you'll just get an empty page. And I think if it's a child view, you'll get nothing where a template should be