Correct.
There is an ongoing discussion of the Cyber Weeks promotion in the Steinberg Lounge. It transpires that Dorico was not included in Cyber Weeks, but it seems there will be a sale on Dorico later this year, presumably to coincide with the release of Dorico 5.1.
Steinberg had stated that Cubase would not be included in this sale - it was too soon after the release of the new version. The same reasoning applies to Nuendo.