Just watched the Livestream recording for Update 68. For the future, they will no longer be doing this type of update, but will be doing event walk throughs instead. So if you watch for the trivia and seeing the hosts, that will no longer be possible.
We should be able to download Update 68 on Tuesday, March 14th. The video stated March 13th, but the hosts said the 14th and there was another caption that mentioned the date changed. I would imagine it is the 14th based on previous updates. The event will start on Thursday, March 16. There are 4 Chapters, with Chapter 1 starting on March 16th. Chapter 2 starts March 19th. Chapter 3 starts March 25th and Chapter 4 starts on April 1st. The event and the current Season (including Kingdom Pass) will end on Thursday, April 6.
March 17th is the 7th Anniversary of the game. There will be a sweepstakes, open to U.S. and Canada that will start towards the end of March and run through early April. Additionally, if you log into the game between March 17th and April 11th, you will get a 7th Anniversary Hat Stand.
With the Encanto event, there will be 5 new characters - Luisa, Isabela, Antonio, Bruno and Mirabel. Antonio is the premium character. As per the screen shots shown, it seems that Antonio will be 500 Gems or there will be two bundles available ($9.99 or $13.99). This appears to the be the norm now. I am guessing this is U.S. $.
There will be two Attractions - Casita (the home) and Isabela's Room. These should be available via event currency.
There are two (or three if you include the 7th Anniversary Hat Stand) Concessions. There is the Encanto Mouse Ears Headband and the Jaguar Plush stand. There will also be various decorations.
They only mentioned a Striking Gold Event, which has the Encanto Gold Trophy for the 1st place individual. They didn't mention the release notes, but that should list more about the Striking Gold Event as well as any other tapper events they may throw our way.
Finally, there will be an Encanto Parade Float available via Gems. I think I heard something about a bundle as well. No mention of "cost".