They added 4 new maps. The unit requirements for these maps don't look that high or at least not to me. I lost most of my cash units that i use for missions, but i don't think i saw one thing that would require me to spend over 10mil.
None of the missions popped out as an obviously good money maker. Although they are reasonable payouts. Also the energy costs for the bosses went up big time. Last map has you hitting the boss 20 times at 594 energy each.
They still however, have not fixed the horrible payouts for the previous 4 maps. So it's still not worth it to complete the PvE goals. The new bosses pay out maximums of 6-7.5mil though, which could be very helpful when going for an expensive upgrade.