Potential problem with (Nexus) HTC One on T-Mobile?

I've read that the HTC One coming out through Google will not support the 1700 band on T-Mobile. I have a phone provided through work so I use a pre-paid plan with T-Mobile for mainly data and some limited calling. I'm not sure how to find out if I'm currently using this band with my Galaxy Nexus or if the 1900 band would cover me here.

For what it matters, when I check the mobile network type in settings it says I am on HSDPA:8. The Edge network is so painfully slow here that it's almost unusable. If this means I'll have less coverage on HSPA than I do now it will probably be a deal breaker. Does anyone have any info on whether this will be an issue or where I could find out if it will even affect me?