Dodrio gets a (Rapid Strike) V card and Umbreon makes it's debut in the Sword & Shield TCG.
Dodrio V (Rapid Strike) (162/S-P), Umbreon(161/S-P), Cherubi (158/S-P), Tepig (Single Strike)(159/S-P) and Galarian Mr. Mime (160/S-P) have been revealed.
Update: Honey (164/S-P) has also been discovered. Not confirmed if this comes from the same Gym Promo pack or is a standalone Gym Promo. We think it is. Usually standalone Supporter Gym Promo's are Mirrorfoil cards and the ones in the pack are non-holo. Thank you to tunu1223 for sharing this with us.
Update 2: Eevee (163/S-P) has also been discovered. It matches with Umbreon (161/S-P). Thank you to tunu1223 again for sharing this with us. The set looks be complete now. It seems this set doesn't contain an extra promo. We don't know for sure. The first Gym Promo set also contained 7 cards.
Update 3: Leon 165/S-P Pokémon Card Gym promo revealed. To be given out during Pokémon Card Gym battles. Thank you GrollenKette951 for the image. This specific store will give the Leon Gym promo out on March 31, 2021.
We think this Tepig Single Strike promo might be the one that is being featured in the upcoming Collector Chest (Spring 2021: Single Strike Tepig / Rapid Strike Shinx), however this is not confirmed. Since this Gym Promo Set is not yet fully revealed, we think a matching Eevee and Shinx (Rapid Strike) could be revealed.
So far the last 3 Gym Promo sets had an Eeveelution card in there with a matching Eevee. So we think there's still an Eevee to be revealed. Cherubi, Tepig (Single Strike) and Galarian Mr. Mime are alternate artwork cards from S5I / S5R Sword & Shield - Single Strike Master / Rapid Strike Master.
We don't know when this Gym Promo set releases. These promo packs are usually given out during Pokémon Card Gym events. Pokémon card events in Japan have been cancelled recently due to the global pandemic. Last year in March, the 2nd set of Gym Promo's of which it's the events were cancelled, were leaked out on the market. We do not know if people/card shops managed to obtain these packs.
Cards below have been translated by ToineLay, thank you!
[C] Press On 20
During your next turn, this Pokémon's attacks deal 80 more damage to your opponent's Active Pokémon.
[C][C][C] Ruckus Drill 160
This Pokémon does 30 damage to itself.