Pokémon Go Lucky Pokémon looks like another type of Pokémon to look out for - joining Shinies and Forms such as Alolan Pokémon.
While the aforementioned types only fill out your Pokédex, Lucky Pokémon status also provides a direct benefit - allowing that creature up at a much cheaper cost than regular Pokémon.
Lucky Pokémon have been confirmed by Niantic, and will be coming to the game very soon.
What are Lucky Pokémon in Pokémon Go?
Lucky Pokémon is a special status, separate to Forms or Shinies, that Pokémon can have attached to them.
If a Pokémon is Lucky, then the Stardust required to power it up is reduced. The exact figure isn't confirmed, but based on leaks so far (by Chrales, via reddit) suggests it is 50%. The feature is particularly welcome as Stardust and Candy are among the more scarce resources in the game, especially at high level play, allowing creatures to reach maximum CP much easier.
Additionally, the number of Lucky Pokémon you have caught will appear in the Pokédex (alongside 'seen' and 'caught') as well as the Pokémon stats screen, with a unique background:
What we don't know is:
Whether the status is permanent. A decline in Stardust cost for powering up is generous, but whether being Lucky is a be a permanent status, or something that only lasts for a limited amount of time, is unknown.
Can a Pokémon be Shiny and Lucky? Since Lucky Pokémon aren't a 'form', then this is possible - but we don't know for sure.
How to get Lucky Pokémon in Pokémon Go
Lucky Pokémon come from the game's trading feature. When you trade, there's a chance both creatures will have the Lucky status afterwards.
The success rate isn't yet known, but the longer the Pokémon has been in storage - in other words, the longer you've owned the Pokémon - the higher the chances of it becoming Lucky by the end of it.
When the Lucky Pokémon feature goes live and the community experiments with the feature, we'll know more about the specific chance rate.
When is the Lucky Pokémon release date?
Niantic has confirmed the existance of Lucky Pokemon, and has released app updates for both iOS and Android with the feature.
However, with the update still rolling out, the feature has yet to be set live:
When is it likely to go up? Certainly by the end of this week (Friday July 27th), but it'll likely be before then. Niantic events usually start and end at 9pm UK time, which could also be when Niantic will flick the switch.
This update also comes with a number of other features, including filter options for the Friends list and the ability to give nicknames, tweaks to Gifts (200XP for each one sent, and the ability to delete unwanted gifts), being able to search for Traded Pokémon in your Pokémon Box, and see the time remaining on in-progress raids.