You may remember back during the launch of the Samsung Galaxy Note 5 last year some users had issues with the included S Pen. Specifically, they somehow managed to put them in backwards, and there was no way to get them out!
It caused a lot of internet whining at the time, and the company was quick to point out that it doesn't happen if you actually read you manual and don't stick things in where they don't fit, but it seems they've quietly gone the extra mile as well. Newer versions of the Note 5 have a redesigned space which makes it easier to eject a pen which has been inserted incorrectly.
Samsung hasn't seen fit to comment on this change but it does seem to be legit, and if so it's a good move to ensure less frustration from users. Of course, if you read the manual this wouldn't be an issue in the first place!