- Jensen’s “Hung out with a new friend today. Thanks for taking good care of me, brother.” posts on twitter and instagram seem to mean that it’s a real tattoo he got himself, not something fake for the show.
- 13x02 features a tattoo parlor where Jack gets his tattoos, and design of angel wings tattoo can be seen inside the parlor, but 13x02 got filmed a long time ago so Jensen’s tattoo seems to be unrelated to that.
- While it’s possible that a future Supernatural episode reveals that Dean actually got a tattoo back in that scene (they love showing us things later… especially regarding things related to Dean and Castiel), Jensen’s post seem to indicate it is an actual tattoo he got inked on his skin.
The possibilities imo are:
a) it is not a real tattoo, despite what seems from Jensen’s posts. Maybe he’s pretending he got a real tattoo for feels when it is revealed that it’s actually Dean’s.
b) Jensen got a wings tattoo, completely unrelated to what is happening in the show right now. The tattoo will be covered up in case Dean’s arms are shown. Bizarre since Jensen said he wasn’t going to get a tattoo as long as he was acting, because covering up tattoos for the job is a hassle. Which leads us to the next option
c) Jensen wanted to get a wings tattoo, he asked the show runners if it was okay, the show runners gave him the thumbs up because they were like ‘oh cool. It fits with the show. We actually had a whole episode with tattoos and stuff! We’ll actually show Dean having it!’
d) The show runners decided to have Dean get a wings tattoo. It was meant to be a fake tattoo like the anti-possession one, but Jensen was like, ‘wait that’s a great idea, I’m going to get it for real and have it on my skin forever because I love the concept!’