Pokemon has officially revealed the full art version of Slaking V and the rainbow rare version of Professor’s Research (Professor Willow).
Pokemon also posted an example of what can be pulled out of one booster box of the Japanese set:
We translated the entire Pokemon GO set last week. The rest of the set’s secret rares should leak this week, so stay tuned! The set will release in Japan on June 17th and then internationally on July 1st.