So they're re-numbering the current EK430/431 to EK434/435 and vice-versa and then the new EK430/431 is operating at about the same time as the former EK432/433 (which went via SIN).Yep, just looked up Expertflyer. It looks like:
Route # Description Departure time Arrival time EK431 (new) BNE-DXB 0250 1100 EK435 BNE-DXB 2100 0510 EK430 (new) DXB-BNE 0230 2220 EK434 DXB-BNE 1035 0625