Thank youu i’ll disenchant them rn before they lose their value
Just spoke to Meddler. If you have shards you should DE now for the full price (if you care a lot about having BE). We would like to bring them back at some point in the future, but don't currently have a timeline on when. If you get shards in Patch 25.5 you should hold onto them until the future when we do.
We'll definitely provide updates on a timeline when we have them, but I wouldn't expect that answer by the next Dev Update.