Got this voucher via email today.

Haven’t been to Wagamama in a while, but worth trying out if you get a free meal!
(conditions stated on the bottom of the voucher)

The new spring menu is copy-pasted below (or visit the link http://www.wagamama.com.au/food/category/specials):

introducing our new spring specials menu. launching in stores thursday 4th september

apple, carrot and ginger juice
a mixture of freshly squeezed apple and carrot juice served with a dash of ginger root

lamb yakitori with spicy peanut sauce
3 skewers of grilled lamb, capsicum and red onions with a spicy peanut sauce

shinjo udon noodles
prawns, squid, barramundi and kamaboko with red onions stir fried in a thickened oyster ginger and wine sauce served with udon noodles. pepper seasoned and garnished with fresh coriander

wasabi and sesame salmon salad
poached salmon strips tossed in a salad of asian leaves mixed with asparagus, carrots, coriander, snowpeas, caramelised red onions, spring onions and cucumber. finished with a wasabi dressing and garnished with mixed sesame seeds