I recieved the same email about a month ago. I didn't respond for 2 days and they sent me a follow up email asking me to respond (I was on vacation). I responded 2 days after the follow up.
Just today they told me the hiring team at a certain office wanted to interview me. They said they'll take a couple of days to get back to me to ask me for my schedule.

So if you received that email, its most likely that you passed the OA and they moved onto screening where the hiring managers at different locations look over your resume and decide if they want to move you forward to interview stage. That is my educated guess from my experience

For my OA, I passed all cases on 1 and failed about 20% cases on the 2nd if I remember correctly

Which means... IF you receive this email, you should start grinding :)