This is interesting the misses likes the XC90 and is looking for an upgrade soon. I'm not sure about the Australian market and the accuracy of wikipedia but the link
https://en.wikipedia.org/wiki/Volvo_XC90 mentions that in 2012 there was a power increase of 9 kw's and 20 nm torque for the D5.
Diesel engines
[hide]Model Engine code Year(s) Power Torque @rpm Displacement Comment
2.4D D5244T5[18] 2009 120 kW (163 PS; 161 bhp) 340 N·m (250 lb·ft) @ 1750 2,400 cc (146.5 in3) I5 turbo
D4 D5244T5 2013 120 kW (163 PS; 161 bhp) 340 N·m (250 lb·ft) @ 2,401 cc (146.5 in3) I5 turbo
D5
D5 AWD D5244T 2003–2004 120 kW (163 PS; 161 bhp) 340 N·m (250 lb·ft) @ 2,401 cc (146.5 in3) I5 turbo
D5
D5 AWD D5244T4[19] 2005–2011 136 kW (185 PS; 182 bhp) 400 N·m (300 lb·ft) @ 2,400 cc (146.5 in3) I5 turbo
D5
D5 AWD D5244T18[20] 2012–2014 145 kW (197 PS; 194 bhp) 420 N·m (310 lb·ft) @ 2,400 cc (146.5 in3) I5 turbo