2 Year Subsidy

I have Unlimited Freedom with 3 lines. All 3 are iPhones; 6s, 7, 7. The 6s iPhone is a lease buyout and the other two 7 iPhones are 24-mo financed (not leases).

I am want to upgrade my # (that currently has the 6s on it) to either the 8 or the X and do the 2-year contract (via apple's website) option. (see here: https://imgur.com/l78Jacd)

As stated it says it works with my rate plan and it won't change my plan. (see here: https://imgur.com/4LxeOiA)

But on the final page (see here:https://imgur.com/i4VLkeQ) There are many changes listed to my plan: -Price -5gb hotspot, when I currently have 10gb -no mention of unlimited data

At the bottom you see "Sprint rate changes will appear on your next bill. Additional features and/or price adjustments related to your account are not reflected in these prices."

What does the aforementioned mean? Will my plan change? Will I be charged $90 (for this line a month) when currently I am paying $75, ($115 for all 3 lines) on unlimited freedom plan? Will I be charged a device subsidy (some other's in this thread pointed out), when there is no mention of it whatsoever in my apple checkout?

I have more questions, but let's start there... Thank you in advance for explaining it all out to me.

/r/Sprint Thread