Unfortunately, for Minecraft Java Edition, there are no skins that will automatically incorporate a cape. However, in Bedrock Edition, there are some skin packs that come with capes included.

Minecraft Java edition snapshots are not downloadable to players. Players actually must locate the snapshot in their Minecraft launcher.

Mojang Studios have announced the Minecraft PC Bundle, a package deal that will give Xbox Game Pass for PC users access to both the Java Edition and the Bedrock Edition of Minecraft.