Maybe, but we can see a good difference just we need to wait and watch. I get band 3+1 CA speeds are 30Mbps in it.But as there is no Fiber Backhaul I think speeds won't increase that much even using 2x2 with 10Mhz.
Speeds are only 15Mbps in band 1 5Mhz SISO, we can get 30Mbps with 2x2 MIMO with addition of another 5Mhz we can get upto 60Mbps.