The consensus of one community over the next step of this slowly progressing special server is that November is the (forgive us) prime target for release. “My RIFT Prime timeline prediction: Open up Infernal Dawn in early-mid September, with Primeval Feast late September to early October. Tempest Rising event in October alongside a release of the Exodus of the Storm Queen dungeon. Storm Legion Prime launch in November (alongside a potential RIFT Patch 4.6).”
Meanwhile, Trion did confirmed that the second tier of planar attunement for Prime’s level capped players has now unlocked. Enjoy grinding that out!