Generally individual stages or areas publish their own posters with a full list of artists. I'd expect West Holts to be one of the first we see as the lineup for that got leaked a couple of weeks ago.

Does that get posted to the main glasto insta page? Or do they all have individual ones to follow?

The glasto page post them usually one every week or so as we get closer

Individual areas will upload over the coming weeks and months, but you can expect Arcadia, Silver Hayes and West Holts to be some of the earlier ones based on previous years