If you "need" a better radio now, let the dealership install the OEM one, otherwise wait for the commercial third-party solution (and expect a long, long wait). It was an unwise choice to buy it thinking you could have a new radio just swapped in without doing some homework first, new cars are getting the head units more and more tightly integrated with the rest of the vehicle purposefully making it less and less feasible to use an aftermarket radio. This is happening in all brands, not just Jeep.
On my Compass, some of the climate and comfort controls are ONLY accessible via the radio touchscreen, there is no other way to toggle the dual climate control sync or turn the heated seats and wheel on/off. There is no way to know if those items are on or off without looking at the touchscreen. Some of the brightness controls and a bunch of the vehicle behaviors (all doors unlock with drivers door, courtesy light timeout, honk with remote start, etc) are also only controlled via the head unit. Its hard to imagine it even being worth Kenwood's time to try to reverse engineer all of that stuff, some or all of it may get left out.
OEM radio is the only way to go in my eyes, and as a warning to others you'd better get the one you want to start with because they charge mega bucks to upgrade to the nicer bigger Uconnect after the sale.