It seems Zero's Tea Time was last released 20 days ago. The releases for all of these are in SS of course so it makes sense for one to get out of the way for the other.
Zero's Tea Time is a lighthearted extra series that has some nice moments in it. When it comes to the art I prefer Gosho's over the designs and detailing, but some of the paneling in ZTT are really cool and different, and I like how he uses double-page spreads. That one scene with Amuro fishing and reminiscing looks and feels great. I like how the mangaka can showcase flow of time in a single panel. Also it's cool to constantly get new color pages. I'm interested in seeing other series from the author if ZTT etc. ends.