Nope, nothing there either. I get the feeling that there's massively mixed messaging about this. It's meant to have been released in the UK, but it obviously hasn't. It's not available on the galaxy store (so I can't get it on my watch) and it's not on Google play (can't get it on my phone). I'm feeling rather like I (and the rest of the UK) have been deceived on its true availablity date.
To get the app to download I had to add the ECG and BP widget to the watch, from the galaxy Wear app in widgets. Then I opened either one up on the watch ECG or BP, then from there it will say learn more press it then scroll down to download app. It then showed up on my phone to download the app. Hope this helped. I also could not find it in the galaxy app store.
@Max2ksr: Please ensure that your watch and phone are both on the most recent software version. For the phone, head to Settings > Software Update, and for the watch, open the Wearables app > Watch Software Update > Download and install.