We currently have a 2015 70D and at the time of shopping for it I thought that ALL 2015's were devoid of the previously defunct "Tech Package". I'm now seeing 2015's (which I assume are earlier model year versions) which indeed have Tech Package. Is there a significant difference from a 2015 85D with tech package and say our 2015 70D that was made after the "Tech Package" was deleted (aside from the obvious range differences)? For instance, will the 85D have 4G/LTE or would this only be available for the 2015 85D's new enough to no longer have the Tech Package so it came standard? Also, I assume that being as it's early 2015 it wouldn't need the "Premium Package" to have things like ambient LED interior lighting and such? I'm a bit confused by this mid-year transition since it looks like bits & pieces were done over several months right in the middle of that model year.