You’ve misunderstood slightly.
A NEW set of implants are being introduced, which provide a shield HP bonus. This set will be named ‘Slaves’.
Existing Slave implants (i.e. the armour ones) are being RENAMED to ‘Amulet’. they will continue to provide armour bonuses.
From the post in ‘upcoming features and changes’:
A quick note on the Slave implants:
The existing Slave implants that improve armor hitpoints will be renamed to Amulet implants and new copies of Amulet implants will come from Blood Raiders content rather than Sanshas. If you have an implant that increases armor hitpoints before this patch, it will continue to provide exactly the same bonuses after the patch. It will just be renamed to “Amulet” and have a different text description.
link https://forums.eveonline.com/t/summer-2019-new-pirate-implant-sets/149867