Board Thread:Plants vs. Zombies Heroes/@comment-27053902-20170429222935/@comment-4077536-20170502154420

I took May 30 as a safe guess because week8_day5 (June 3) is the first instance where a non-1.16.14 card is used (Going Viral). And I'm assuming that the Set 2 update will also contain the next batch of event cards.

I didn't check if any board abilities were used in the previous weeks, so it's possible that it's even earlier.

Also, what did KTT exactly show? Something about the "kV" value?