There’s been one maintenance release since this thread was started and it didn’t contain any chord symbol updates. The devs rarely ever mention future features in advance. On August 28th, Daniel said D6 was not imminent and was “nowhere near finished” so I wouldn’t get your hopes up for any changes to this coming soon.
D5 was released at the end of May 2023. That seems like a good time of year for software releases as any schools that have any budget left from the current fiscal year can spend it then, or wait until July 1 and spend it with the next year’s budget. Obviously some of the team must have been busy recently working on the Cubase 14 notation features too. If I had to guess, I would think May 2025 would be the earliest we’d see any change to chord symbol features.