Hey look!

The clip the screenshots earlier are from!

Update- Toei put it up with English subtitles, we've changed the above embed. Other versions that have been up:
Toei Japan
Toei USA put it on their page also.
onkei put up a translated version on Twitter.

The Digimon Adventure website confirms this is the same clip that was played for those at DigiFes, and also gets us our first listen at the new voices for the 02 kids:
Daisuke is played by Fukujuro Katayama
Ken is played by Arthur Lounsbery
Miyako is played by Ayaka Asai
Iori is played by Yoshitaka Yamaya

Much like the Adventure characters with their new actors in tri., all of whom are returning in Kizuna, the new voices seem to match aged up versions of the 02 characters well, based on the bits of dialogue we get here.

The 02 Digimon are all being voiced by their original actors:
Junko Noda as V-mon
Naozumi Takahashi as Wormmon
Kouichi Toochika as Hawkmon
Megumi Urawa as Armadimon

Digimon Adventure: Last Evolution Kizuna, the 20th Anniversary film for Digimon Adventure, comes out February 21, 2020 in Japan, with a release in the US in Spring 2020 announced.