Looks like the cat's out of the bag for an upcoming Team17 release. Retailers have added listings for a Overcooked! + Overcooked! 2 retail bundle, which includes both games in one package. Listings show the bundle as launching on Nov. 26th, 2019, and sadly, this package does not include the DLC for either game.

Want to experience everything that the Overcooked! series has to offer" Your chance to own it all in package might be waiting over the horizon.

Various retail listings in Europe and Australia have seemingly revealed a double-pack physical release titled Overcooked! + Overcooked! 2 for Nintendo Switch, with a launch date of 26 November 2019. Based on these listings, the package will contain both the base games for Overcooked! and Overcooked! 2 - without the additional DLC packs released so far.
QUELLE und TEXT: https://gonintendo.com/stories/345527-physical-release-for-overcooked-overcooked-2-spotted-in-euro

...