No, in manual flight the autothrust will require you to reduce thrust to idle, although it gives you a "retard" call at 20'. So, if you flare at the appropriate point but leave the thrust levers in the CLB detent, the thrust will come up to maintain the speed.
During an autoland the thrust will automatically reduce to idle, but still gives you a "retard" reminder at 10' to remind you to set the thrust levers to idle.
DH