So you want to upgrade! HOW?

[Confused]

How do you upgrade?

1. Register your interest. -Yep..OK so far...
2. Wait patiently, forget about upgrades, enjoy the summer and lovely music from your existing Devialet.
3. Devialet will be in touch soon ..... A simple emailed acknowledgement within a few days would have sufficed.. just so you know the registration had been successful. It is not rocket-science, and could have been automated quite easily....Not a lot to ask, is it?

Yes, I cannot argue with that!  I wasn't clear, I got an email, subscribed, and it told me that I had already subscribed.  It is perhaps curious that the error message was slightly more informative than Devialet!  Although..........   You appear to have skipped item 2.