i hear from those looking for the E5 model that the "arriving in august" tag on the bike on specialized.com is a little aggressive, with no ETA from specialized being given to dealers. if you keep a close eye on the website you can probably get one through their click and collect (you buy it, delivered to LBS and they set it up for you) but beware that the new ones usually sell out in the most common sizes within a few hours of dropping.
i know you asked creo 2 owners
![Wink ;) ;)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
but from my creo 1 experience, and comparing it to the ride of the similar aluminum vado SL, ride quality is the main difference. for non-electric bikes, aluminum frame tubes can be more carefully sized and shaped to give the right balance of damping, stiffness, and flex, but aluminum e-bikes are limited by the huge tubes needed for the battery, the mid-drive, etc. to me, and this is very subjective, they seem extremely harsh and buzzy, which is why so many people go down the road of shock stems, shock seatposts, and really big tires. carbon fiber is a much more forgiving material for engineering crazy shapes, and i always felt the ride quality of my carbon e-bikes (creo 1, scott addict) was closer to the ride of a good traditional road bike, with relatively small tires. whether it's worth $2k to you, who knows!!
do you know what size you need?