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No pics? Has my attention though. This is either a filler or the second part to the Johto episode.
It hasn't aired yet, hence the lack of pictures. Oh, and just because DP144 and the "Johto episode" air on the same day, doesn't necessarily mean they relate to one another. I honestly don't think it's a filler either; the word "capture" could suggest a new Pokemon for one of the cast. Preferably Dawn.
DP144: "Dungeon Capture!? Valley Windworks!!" Summary:
Kotone and Kazunari join the group and travel together. However, while Dawn was doing some contest training, Kotone loses her Marill. It appears that Marill went into the power plant. Ash's group searches for Marill right away, but Magnemites comes out from nowhere and attacks them.