This year obviously can't be the actual release date for software, since MSX computers weren't on the market yet. Following the links to Tagoo, there are other release dates given for the Japanese releases. The Infocom entries (including the later ones) are most likely unofficial conversions, to my knowledge Infocom didn't release their adventures on tape (except I think, a cuby Blaming Halo - MSX Software Database
I choose "no" in the "has screenshot field" because I was thinking that might be a good way to know what isn't widely available, and yet, the entries that come up show me shots. Edit: But it works properly when I click on the option under the "help us" field.by Blaming Halo - Generation MSX