Dell Venue 7 & 8 HSPA support

Hey guys,

I know that Dell hasn't released a variant with mobile data support, but I've been digging around to try and find more information but to no avail. I was wondering if anyone knows if Dell Venue's baseband radio is going to have AWS HSPA+ support? The Dell Venue 8 Pro lists its future mobile broadband support is being implemented by Wireless WAN Dell Wireless 5570E, but even searching that chip yielded no technical information as to the bands that it supports.

This is very important to me as my carrier only operates on that band for HSPA+ as I'm planning to get a Dell Venue tablet. If anyone has any information, may you please let me know?

Thanks guys,
deltatux