Notion 6 is basically out of development. PreSonus hasn't even bothered updating it for Apple Silicon (M1) Native. They just put the Notion Mobile App on the Mac App Store instead (they did the same on Windows).
Regarding @herbievantetering response...
Notion's MIDI Editing features are about as robust as Finale's, but it lacks Finale's Human Playback System, better support for Garritan Personal Orchestra 5 (which was designed to be used with Finale's HP system), superior Engraving and support for a multitude of advanced notation features.
Software like Dorico go far beyond what is available in this area, and with the Elements version having Unlimited Staves/Players now... well.. that's a problem... for Notion. Cuase hte price point has positioned it in a weird place in the market. MuseScore and Dorico Elements sit below it, and then Finale 27 has halved the Price tag to $299 and has multiple 50% Off sales per year.
The statement about Notion 7 coming soon aged quite well. What we got was an update to Notion Mobile (actually worse than it was on iPad, IMVHO) and instead of making Notion 6 M1 Native and bug fixing/improving MusicXML support... they shoved the Mobile App into the Microsoft and Mac App Stores. At least the price for that version makes more sense, though.
I still like it on Mobile, for the Windows Pen, Apple Pencil and S Pen Support. But once you graduate out of "true beginner" status, I think Notion will provide more limitations than worth it to stay with it over MuseScore or just getting something like Dorico Elements or Finale.
Notion 6 (and Mobile) is fine for getting MusicXML out of Finale, Sibelius or Dorico into Studio One. Studio One cannot import MusicXML, so importing to Notion and then sending the Note Data to Studio One is the best way to get those scores into the DAW. That's the only reason I use it. I do sketch with it on mobile, when I'm doing simple things and want to write quickly into he score... but for more serious composition on mobile, I will use Dorico for iPad because it's just a more appropriate tool for the job.
Other Notation Packages have too many QoL and Workflow-accelerating features to make it worth using Notion over them. Notion's ease of use is a competitive advantage, but only insofar as the end user isn't at the level where they have need for the better functionality (and therefore do not feel the disparity in efficiency for not having them).
Even Finale, with its historical UX and Workflow, will run circles around Notion due to its deeper functionality and ability to utilize plug-ins (some of the best distributed with the software itself, these days).
I hope they launch Notion 7 soon. I don't really see myself going back to using it as a primary notion software (honestly, I barely use Studio One, these days... as it's more convenient for me to sit within an Apple + Steinberg ecosystem duopoly), but it would really deliver some serious value to the users who have standardized on PreSonus software.
I just don't see how they could ever catch up. MakeMusic can deliver 1 feature every 2 years, and it would probably still take PreSonus 5-10 years to catch up to Finale (outside of UI/UX, which isn't a hard task)... and that's the least innovative/heavily developed competitor. Catching Dorico, Sibelius and MuseScore will be much more difficult, IMO. It's going to be hard to pull users from there, or win mindshare due to the software being allowed to language for so long. Most people I know already consider it to be, basically, abandonware and won't touch it.
