Blizzard previously stated they weren’t happy with Totemic Restoration and were looking to change or replace it. That changes come with the announced Totemic Persistance talent.
New talent: Totemic Persistence. Summoning a second totem of the same
element no longer causes the first totem to be destroyed. Only one totem
can benefit from this effect at a time.
This talent will be particularly useful for resto shamans who either want to double stack healing stream with healing tide totems, or just don’t want to lose out on mana tide, if they happen to drop it right before an unexpected damage spike the requires healing tide. And there is also the case where resto shamans are so used to placing healing stream on cool down that they accidentally clip a healing tide or mana tide totem.
From a DPS perspective, the initial reaction was about how great it would be to drop both searing totem and fire elemental totems together, especially for a burn phase with heroism/bloodlust, however Blizzard is already clarified that this talent will not work for fire totems.
Nonetheless, I suspect this talent will get the most use by resto shamans so they don’t lose out on the benefits of their mana tide or healing tide full durations.