Warframe's Old Blood update is definitely coming to Switch, but we're not quite sure yet. It appears there might be a delay, but it shouldn't be too long. Check out the latest from the dev team on the situation below.
The Old Blood: Update 26.0.6 continues to be in the Cert process, so it’s possible Nintendo Switch won’t launch alongside PS4 & Xbox One today. We're coordinating with all parties to see where we can help! We’re sorry about the delay - thank you so much for your patience. We’ll let you know here as soon as we have more info.