According to the Orlando Sentinel Theme Park Rangers Blog:
A trusted source reports that Disney is reviving a Stitch show that will be presented this year during Mickey’s Very Merry Christmas Party at the Magic Kingdom. It’s name: “A Totally Tomorrowland Christmas,” but it will include the rascally character.
Expect it on the stage where Stitch was previously seen for the short-lived, much-panned Stitch’s Supersonic Celebration.
A Disney official told me they have nothing to announce at this time.
In an 8/16 photo report, I remarked that a new show was set to debut on the stage in November and that modifications were currently being made to the stage. It appears my sources were correct and we can expect “A Totally Tomorrowland Christmas” to fill the gap caused by the demolition of the Galaxy Palace Theater and “Mickey’s Twas the Night Before Christmas”. Stay tuned to WDW News Today as we get more information on this breaking story.