2018 Cannondale Synapse Carbon 105 dilema

currently ride a '10 Alloy Synapse 5 but looking to upgrade. The '18 Synapse carbon frame got a nice rework and I was all set to go that route. However, it appears the latest frame upgrades are only on the 105 Carbon Disc version as the 105 Carbon with rim brakes has the previous generation frame (from a redesign in '15 if I recall). 

I'd like to avoid going the disc route for a couple of reasons  ($500 or so cheaper to stick with the rim brakes and I don't plan on gravel or winter riding where the discs might come in handy)

I understand the '19 is due out shortly though I haven't seen any catalog/specs on what may be out there if I wait a few months.

I know even the previous generation frame on the rim '18 Carbon 105 will be an upgrade over what I've got now but was really hoping to take advantage of all the new changes to the '18 frame. 

leaning towards sticking with rim brakes and the previous-gen carbon frame over the updated '18 frame and being forced to go to discs.

plan on heading over to France to do Alpe d'Huez, Galibier, Croix de Fer/Glandon next summer and thinking the rim brakes would serve me better there as well?