I have watched the anime in full. I understand that canon stops at ep 62. What are the other animated contents that cover the canon story to the fullest?
Referring Wikipedia, there were two OVAs. Rurouni Kenshin: Trust & Betrayal seems canon without controversy. Rurouni Kenshin: Reflection was declared non-canon by the author, but I guess it was sourced from canon.
So my best guess is, I must watch Trust & Betrayal and then Reflection to get the canon story. Is my guess correct or did I miss something?
What parts of the manga have been not-animated? Are there upcoming projects that cover the canon story?
Are there upcoming projects that cover the canon story?
Usually, you can check such news on ANN or other anime news site. We don't answer such questions, since we are always behind the news.