They are all APPEARING!!!
From left to right:
Takato (Digimon Tamers/ Season 3)
Daisuke (Digimon Adventures 02/ Season 2)
Taichi (Digimon Adventure/ Season 1)
Takuya (Digimon Frontier/ Season 4)
Masaru Daimon (Digimon Savers/ Season 5)
All of this at January 8. TV Asahi. Digimon Xros Wars 02 Episode 68.