I don't know the answer to that question. I know they are working on CA in some form, but I'm not sure if that includes Band 25 or not.Why doesn't sprint deploy carrier aggregation for 1900MHz? I notice in many (if not most markets) they have chunks of 5x5MHz carriers on PCS that is non-contiguous....they could easily lace these together using CA for 15x15 in areas like Chicago....would help users with CA capable devices even if they weren't on B41...I know they want to CA Band 41 but 1900 could use it too!
See the carrier aggregation chart below....
My understanding is that CA is something that will be focused on more once NV is completely done. Lots of places still without Band 41 AND Band 26 right now.
If you're good with registering there, s4gru.com can probably answer the question better. I don't care for the management or culture over there, but the site does have quite a few cellular/wireless experts focusing on Sprint.