There is a video in ATP website with Del Potro practicing in Sydney.
Yes, sokk, he'll play there.
Do you know when the draw will be made?
Yes.. noon tomorrow Australian time, which means probably late tonight our time, around midnight or something
This is from the tournament thread here on MTF:
Tournament Name: MEDIBANK INTERNATIONAL
Location: SYDNEY, AUSTRALIA
Dates: 10–15 JANUARY 2011 (SATURDAY FINAL)
Prize Money: USD $422,300
28 DRAW & 32 QUALIFYING
SITE: Sydney Olympic Park Tennis Centre
Rod Laver Drive, Sydney Olympic Park
NSW Australia 2127
BALL: Wilson Australian Open
WEB SITE: www.medibankinternational.com.au
Qualifying draw: Friday, January 7, 9:00 p.m.
Main draw: Saturday, January 8, Noon
Doubles draw: Saturday, January 8, 6:00 p.m.