The first Digimon with the <<Jamming>> ability was revealed by the official Digimon TCG Twitter account today: Tyrannomon! Both Tyrannomon and Kokuwamon are from Booster ver 1.0: NEW EVOLUTION.

Card NumberBT1-016Level4
Card TypeDigimonPlay Cost4
ColorRedEvolution Cost2
Digimon TypeDinosaurDP4000
AttributeDataRarityRare
StageAdultArtistKISUKE
Main Effect<<Jamming>> (This Digimon is not destroyed by a battle with Security Digimon)
Source Effect

Although Tyrannomon’s Jamming effect causes it to not be destroyed by Security Digimon even when they have higher power, it can still be destroyed by battle with regular Digimon. The ability was already known from the game’s manual, but up to now had not been seen on an actual card.

Card NumberBT1-068Level3
Card TypeDigimonPlay Cost4
ColorGreenEvolution Cost1
Digimon TypeMachineDP2000
AttributeDataRarityCommon
StageChildArtistTonamikanji
Main Effect
Source Effect[During your turn] If this Digimon is Level 6 or greater, it gets <<Security Attack +1>>. (Increase the number of Security this Digimon checks by 1.)

NEW EVOLUTION will launch in Japan on May 15th, 2020.