I just noticed that he "chat" button disappeared and was replaced by "blog". Does that mean no more chat?
It has been replaced for 24 hours by the blog link.
When the blog is no longer "new" it will return.
You can also find chat links, at least on any meta, on every question page in the sidebar.
I happen to agree with the commenter who said:
Replacing a completely unrelated link temporarily because something is new is weird.
Anyway, the bottom line is that chat is still open.