2.6 is bringing some major changes to the competition.
The most recent update to Splatoon promised new rules for the Splatfest, and the new rules will make their Western debut this weekend.
This weekend's competitions in North America (Snowmen v Sand Castles) and Europe/Australia (Hoverboards v Jetpacks) will replace the Vibe Meter with a Splatfest Power ranking. The base of the ranking will be the participant's Ranked Battle ranking, but the ranking will change depending on Splatfest performance. The matchmaking will attempt to match players of a similar Splatfest ranking, and the player / team with the highest Splatfest ranking will gain (or lose) more points at the end of each match.
The new rules debuted in Japan last weekend, with a Dragon Quest inspired "Attack v Heal" competition. Marie's Healers won the match 366-334 (54-46, 52-48), leaving Marie with a four match win streak.