It is our understanding that Game Update 60 will be hitting Test and Test Copy today. Domino‘s post is not a confirmation, but taken with other posts, strongly suggests it:
Most likely early afternoon (PST) but times may vary depending on a variety of factors. There will be an in-game broadcast to warn you.
What annoys me the most here is that they’ve prioritised bringing up the US servers instead of getting Splitpaw up in our prime time.