New editions (not mentioned in this post):

Songs of Silence - Campaigns Edition
Songs of Silence - Complete Edition
Songs of Silence - Expansions Edition
Songs of Silence - Supporter Edition
(these last 3 editions existed before, but now they contain a new expansion, thus new entries)

New DLCs:

Rain World Soundtrack - Alphas, Gems, and Junk
Rain World Soundtrack - Ambients and Instrumentals
Rain World Soundtrack - Songs and Rhythms

New editions and DLCs:

EcoGnomix - Deluxe Edition
EcoGnomix - Coloring Book
EcoGnomix - Original Soundtrack
Gloomy Eyes - Definitive Edition
Gloomy Eyes - Coloring Book

New demos:

Magical Blush Demo
The Golden Caravan Demo

New edition:

Stellaris: Anniversary Edition

Per the description (and the price), this should include the Stellaris base game (and thus be an edition), but it currently requires it. I've contacted support about this.

I recall another similar case within the last two weeks of an intended edition requiring the base game rather than including it. Does anyone remember which game that was?

It got corrected to an edition entry, so I guess it contains the base game correctly now.

Wow, that was fast. Thanks for letting me know!

New edition:

Age of Wonders 4: Starter Edition

New games:

Hentai Day - Ringsel in Troubles
Pandemommyum! Hot Single Moms in My Area

New edition and DLC (not mentioned in this post):

Aphelion Deluxe
Aphelion Soundtrack

New games:

Elven Trip
Spark in the Dark

EDIT: The news post about Spark in the Dark showed up a while later.

New demo:

Celsius Strays Demo

New DLC:

Panzer Corps 2: Allied Operations - Italy: Vol.1