Does GRIP-EMS work on WoW: Forever?
What is confirmed
GRIP-EMS loads on WoW: Forever without any changes. Forever's .toc interface number is 16001, the same number GRIP-EMS already lists for Classic Era support, so the addon passes Forever's interface check with the file exactly as it ships today. Sataana confirmed this directly and has gotten the addon running in-game on the beta client himself.
What that does not confirm is whether a sequence actually runs correctly once it is loaded. Loading and working are different claims, and as of this beta's first week, only the first one has been verified.
Why Forever is not quite Classic Era or retail
Per Sataana, Forever is classed internally as Mainline, meaning it runs on the current retail codebase while declaring the older Classic-style interface number above. That is an unusual pairing, and it means neither existing retail testing nor existing Classic Era testing fully covers it. One concrete example has already surfaced: UnitName("player") returns your full name on Forever, but UnitName("target") does not, and Sataana has said the final behavior here is still unsettled. Treat anything Forever-specific as provisional until it has been observed directly, not assumed from how retail or Classic Era behaves.
The actual blocker: SavedVariables
This is the reason nothing gets published here yet. A sequence that looks broken on Forever right now could just as easily be a working sequence that lost its saved state on the last reload. There is no way to tell the difference until Blizzard fixes the underlying bug, so no result from this week is meaningful evidence either way.
Where this stands
No Forever sequence category exists on LazyGrip yet, and none will until someone can confirm a sequence runs correctly end to end on Forever, past a UI reload, with no SavedVariables asterisk attached. This page gets updated the moment that happens.
If you want to try GRIP-EMS on the Forever beta yourself in the meantime, it installs the same way it does on retail. Just do not trust anything you see until Blizzard ships a fix for the save bug above, and check Sataana's Discord for the latest before assuming a problem is GRIP-EMS's fault rather than the beta's.
One more difference worth knowing
Forever has no realms. Where an addon would normally key something to your realm name, Forever uses a "Ruleset" name instead. It does not affect sequences directly, but it is worth knowing if anything you use looks for a realm and comes up empty.