we have no further news about the collector edition but I think we can assume there will be the cloth map and the soundtracks.

PS there is a lil' mistake on your amazon link, Divinity : Original Sin is NOT Divinity 3 ^^

"-Oh that's fullmoon, cuttie cuttie sheep
-baaaaaaOOOOORGH"
***Sprotch***

Weresheeps will rule the world (At least one night every 29 days)