So it's officially booked! 5th-8th January! Very excited as it will have been 15 years since my last visit, so I'm looking for any advice on things to do and see, I'm sure plenty has changed since
Awesome! (I'm a little jealous
While Disneyland Park itself hasn't had many new rides - the only ones being Buzz Lightyear Laser Blast, an update to Star Tours which is now Star Tours: The Adventure Continues, and the Space Mountain Star Wars HyperSpace Mountain overlay - there are still a lot of new shows like the two new shows on the Royal Castle Stage just next to the castle, both of which have their last performance on the 7th of January 2018. There is also the new 25th anniversary parade, Disney Stars on Parade performed daily as well as Disney Illuminations fireworks, projections and water display.
In Walt Disney Studios, there's are probably quite a few new attractions since your last visit. The ones worth noting are The Twilight Zone Tower of Terror, Crush's Coaster and Ratatouille: The Adventure. Other new attractions include those in the Toy Story Playland and Cars Quatre Roues Rallye. There is also the show, Mickey and the Magician in the Animagique Theatre, which also ends on the 7th of Jan 2018.
There is also the Christmas event which also concludes on the 7th of Jan 2018, which includes the Christmas parade which is performed daily in Disneyland Park and also there is the Frozen Sing-a-long (if your in to that sort of thing
) performed in the Chaparrel Theatre in Frontierland and also Mickey's Christmas Big Band performed on the Videopolis stage (Cafe Hyperion, Discoveryland). On the Royal Castle Stage there is also a new show, A Merry Stichmas! In Walt Disney Studios there is also new shows in the Production Courtyard area called Sing Me a Merry Christmas performed several times daily and a nighttime projection show called Goofy's Incredible Christmas.
I hope this post gives a little insight on what new things you can expect whithout too many spoilers! Each park should have up to date brouchers when you arrive detailing all show times, rides and park maps.