Any information at all about potential 4G/LTE models?

Maybe a bit later in the cycle or on Surface 4 since the Surface 3 has it. They have discontinued the Surface Pro 3 and have replaced it with the Surface Pro 4.
 
I also want this option. Don't now if I should buy now or wait.
Afraid I will regret it if there comes a LTE version later on.
 
I also want this option. Don't now if I should buy now or wait.
Afraid I will regret it if there comes a LTE version later on.

Unfortunately I will continue to wait and instead keep using my Thinkpad X1 Carbon which has integrated LTE

Mind boggling they wouldn't include this as an option for professionals
 
After 4 generations, I highly doubt Microsoft plans to release any LTE versions of these. Just go get a WiFi device from your carrier.