I’ve been out of the office for a couple of days, so I’m sorry for the delay in returning to this thread, but it transpires that our digital marketing team did send this announcement to users who have Dorico 4, in addition to those who have Dorico 3.5 and earlier. This wasn’t intentional, and we’re sorry for the confusion caused.
We have now extended the offer to Dorico 4 users as well as to users of Dorico 3.5 and earlier. You can use the code UPDATE50 to save 50% off a single-user update to the latest versions of Dorico Pro or Dorico Elements.