While the Joss Wheddon-directed sequel to the 2012 ultra-blockbuster is already confirmed to go before cameras in the UK, where the bulk of the production will take place, Comic Book Movie have noted the addition of a South African extras casting co-ordinator, J.P. van der Merwe, to the film's credits list on IMDb.
No, this isn't exactly cast-iron proof that the production will take place partially in South Africa - IMDb isn't always the most reliable source for information of this kind, given it can be updated by just about anyone.
However, it was already known that Marvel had explored the possibility of shooting in Cape Town.
As CBM mention, the obvious conclusion that fans are likely to leap to now is that Black Panther, the African Avenger who we're expecting to see show up in the movies at some point, may now make his first appearance, if Africa-based shooting is set to occur.
If we want to get a bit more speculative about it, we might also mention that '12 Years A Slave' star Chiwetel Ejifor - who, of course, has worked with Joss Whedon before on 'Serenity' - has suggested possible interest in taking a superhero role.
However, we probably shouldn't get ahead of ourselves there. We already know of at least three new characters to be introduced in 'Avengers: Age of Ultron' - James Spader as the titular villain, and Elizabeth Olsen and Aaron Taylor-Johnson as super-powered siblings Scarlet Witch and Quicksilver.
Plus it looks like Don Cheadle's War Machine and Anthony Mackie's Falcon (to be introduced later this year in 'Captain America: the Winter Soldier') may also be joining the team this time around.
On top of all that, a fourth new major character might be biting off a little more than even Whedon can chew. Anyway, I can't help thinking we'd have heard something by now if Black Panther were to be involved.
More than that, though - just because the movie may shoot scenes in Cape Town doesn't mean the story will necessarily take place there. As CBM also emphasise, that region has served as a location for many other movies - they mention 'Dredd' and 'Chronicle,' and I might add Neil Marshall's 'Doomsday' - which were not actually set in South Africa.
We look forward to seeing how this develops - any mention of T'Challa, Wakanda or even Vibranium, we'll let you know...
Would you like to see The Black Panther in 'Avengers: Age of Ultron?' Or do you think that's just wishful thinking right now? Let us know in the comments.