Rego Request: QF409 17/4 + TT5108 18/4

Hi there - popping down to Melbourne for the weekend 16/17 April, QF409 down, and thought to mix it up I'd try out Tiger on the way back on TT5108 17/4.

Any idea which aircraft are going to be operating these flights?

Edit: Sorry, I had the incorrect dates initially - QF is on 16th and TT on 17th, would a mod be so kind as to update the thread title?