The news was confirmed on the game’s official Twitter page, explaining: “Trainers, we have some Egg-citing news! Super Incubators are now available in the in-game shop until 2/1.
“Get hatching, Trainers. For a limited time, every Egg you hatch will feature a Pokémon originally discovered in the Hoenn region.”
So until February 1, Trainers have a great chance of bulking out their current Gen 3 lineup, with plenty of incentive to do it.
That means Trainers have the chance of grabbing a new Shiny they want, while also adding a top Pokemon to their team.
The final evolution for Aron is Aggron, which is also currently available to battle as a Raid boss.
However, fans can avoid this encounter and instead go for an epic Aron evolution mission, made even better if you track down a shiny version too.
This can be boosted to 2145 CP if caught with the right Weather Effect active.
In terms of which new Pokemon to use to catch Aggron, Kyogre, Groudon and Machamp have all been identified as good picks.
Having a good mix of Fighting, Ground and Water Pokemon will make taking on Aggron easier, although there is another way to obtain it.
The next wave of Gen 3 Pokemon could be announced next month, with February 15 serving as a good launch day.
That’s when the latest Kyogre Raid run will be done and will also be around the same time in 2017 when a lot of Gen 2 Pokemon were added to the game.