"These data mined "patch notes" often completely miss the boat, since they are just grabbing numbers without context into associated mechanics changes. We should probably develop a better system for communicating PBE changes to players as we put them on that environment. We just need a way of doing so without making speculative efforts seem like certainties.
The change to Diana/Lux that is on PBE for testing is that their shields have lower values, but if the second trigger is met (3 orbs broken and boomerang double hitting respectively), the shields will stack instead of renew. Volty feels this opens up new opportunities for premeditated gameplay (like stacking a monster Lux shield on your team as you engage), while making aggressive counterplay more rewarding since hitting a Lux shield with the projectile still airborne can feel like an exercise in futility."