I recently attended a Pokemon Sun and Moon Pre-Release event, and opened 5 Sun and Moon Booster Packs! See me open them and more here!
Today the official Pokemon website updated to show two new cards. One is Alolan Persian and the other is Gumshoos GX. More cards are sure to come!
In Japan the first Pokemon Sun and Moon TCG set is due to be released December 9th, this page contains a full list of all the cards known in the set! More will be added as they are revealed.