More videos in the next days?

[Chuck Angry Birds]

Probably, since there are some film wheels (if that's what it's called) in the page.

[Calypso]

nah. valve only release 1 video for 1 update.

[Megative]

The first day of the Love & War update did reveal five new emotes, but it looks like Valve is saving any hard details on what all this mutant bread is about until later this week, with more reveals likely coming on Wednesday, Thursday, and Friday. If we had to guess, the monster shown at the end of the video could be a new variation on TF2's existing, co-op "Mann vs. Machine" mode, a new boss encounter in a new environment.

I took that text from Team Fortress 2 News on "Valve releases 15-minute Team Fortress 2 “Expiration Date” short for Love and War update"