Will Beastmaster appear in any Endwalker content patches?

[Archwizard]

I don't know if BST will appear in EW patches, but logistically it's not out of the question.

BLU had two content bumps this expansion, but is now one expansion behind current content. Given the nature of Limited Jobs, the devs have no reason to ever make BLU's cap match that of Full Jobs, so it's probable it will always be one hard-capped to be an expansion behind.
Thus, it seems reasonable to me to assume that, if the trends persist, we may have room for one BLU update in EW to be current with ShB (even if it probably won't be able to go into Bozja), and time and resources available for the devs to output one new Limited Job, perhaps even as a pseudo-update to BLU if the two jobs are able to broach the same content.
We know the devs are going to add more "downtime" content after 6.0, like the farm island, so it's not off the table they would similarly shift focus onto non-competitive content. Of course, that could also hurt BST's chances if it ends up taking the same resources.

[Raikai]

I don't know if BST will appear in EW patches, but logistically it's not out of the question.

BLU had two content bumps this expansion, but is now one expansion behind current content. Given the nature of Limited Jobs, the devs have no reason to ever make BLU's cap match that of Full Jobs, so it's probable it will always be one hard-capped to be an expansion behind.
Thus, it seems reasonable to me to assume that, if the trends persist, we may have room for one BLU update in EW to be current with ShB (even if it probably won't be able to go into Bozja), and time and resources available for the devs to output one new Limited Job, perhaps even as a pseudo-update to BLU if the two jobs are able to broach the same content.
We know the devs are going to add more "downtime" content after 6.0, like the farm island, so it's not off the table they would similarly shift focus onto non-competitive content. Of course, that could also hurt BST's chances if it ends up taking the same resources.

That makes total sense. Plus, let's not put out the fact that the pandemic delay might have affected XIV's non-MSQ/Raid/24 man related content. If I would put into consideration, having BLU catch up with the previous xpac was above the priority of introducing BST as a new limited job.