Thanks for the explanation. I suppose it would not be a easy task to do manually hence I though that the data could be pulled off sites like anidb or vndb, unless the goal is to only keep track of the most popular material. I did not expect anyone to check all the internet for unofficial releases, specially when it comes to japanese stuff which by all means is very disorganized like you said, I was thinking something more simple and for AS alone. As you see a calender alone is somewhat easy to check on 3rd parties so its not that important, what it's not that easy is checking unofficial releases ready for DL, perhaps the word 'calender' is not the most appropriate to describe it, before I attached an image from a website, from a private TV tracker website to be more exact, and I already explained it, contrary to what you may think it's not tracking any scene PRE database to gather information, it is just tracking internal releases uploaded by its own users which get automatically highlighted if anyone of said users have by any chance subscribed or favorite a show, by highlighted I mean you get to see it on the website's own scheduled/calendar list or you get to go to your control panel to say it like that and check for newly released shows that you subscribed to and got released, it's some kind of advance request that you get notify when its filled. Granted the website in question is a torrent tracker and AS is a forum so I'm not so sure if it would be viable to do it here, on my mind it would work like this:
Minori's next game is scheduled to release on 2014/01/31, its something that I'm looking for so I favorite/subscribe to this entry on a given list of upcoming games and when lets say girlcelly makes a new thread with said game ready for DL, it would automatically popup on the site gaming list or my own control panel! Off course AS itself needed to provided said list in advance thus my use of the word 'calender', I suppose it would be less burdensome if said list would disregard specific releases and dates and would only have companies on it so in this case when something of Minori is released I get notified, just like the website example I gave where you favorite the shows you like and if any subsequent release regarding that show is made it lets you know as if was a subscription of yours.
I just wanted to clarify my suggestion a little bit, it's not that crucial of a thing, it's just something I though would be cool to have here since atm AS is where I mostly check for releases and it's good enough for me. Anyway I'm not an expert on the technical difficulties to implement something like it on a forum, the closest thing that I know off is when you have an IRC bot spaming any new post or thread that is made.