Ten of the squad are already capped from last season's matches with Matthew Jones reclaiming the No 10 jersey in a side captained by No 8 Jonathan Mills. Wing Aled Brew follows in the footsteps of brother Nathan - who went on to win a senior cap - while there are two new faces on the replacements bench in Cardiff prop Phillip Osborne and Penzance scrum half Rhodri McAtee.
Wales finished sixth in last summer's World Cup, losing twice to England in Glasgow, 23-14 and 26-19, as well as going down 22-19 in a Six Nations thriller at Gloucester last season.
Wales under 21: Ricky Williams (Newport); Aled Brew (Ospreys/Neath), Andrew Bishop (Neath), Gavin Evans (Scarlets/Llanelli), Chris Czekaj (Cardiff); Matthew Jones (Ospreys), Wayne Evans (Carmarthen Quins); Scott Roberts (Bridgend), Duane Goodfield (Pontypridd), Cai Griffiths (Neath/Ospreys), Alun Wyn-Jones (Swansea), Ian Evans (Neath), Chris Davies (Bridgend), Rhys Shellard (Pontypridd), Jonathan Mills (Scarlets, captain)
Replacements: Rhys James (UWIC), Ross Davies (Newbridge), Phillip Osborne (Cardiff), James Merriman (Hartpury Coll/Gloucester), Tom Smith (Neath), Aled Thomas (Carmarthen Quins), Rhodri McAtee (Penzance)
WRU Consultant Head of Physical Performance Paul Stridgeon praises the Physical Performance department for their work and dedication as he addresses the media ahead of Wales' Pool A clash against Australia
Twelve young people have been selected to follow a one year WRU Coach Core apprenticeship programme. Coach Core was set up by the Royal Foundation of the Duke and Duchess of Cambridge and Prince Harry as part of the Olympics legacy in 2012 and the Duke of Cambridge was on hand to meet the apprentices on their first day in the job. The programme has been funded by the Hunter Foundation.
The WRU has launched a campaign to create a long term legacy for Welsh club rugby by highlighting the advantages of volunteering. Rhian Edwards, a volunteer at Seven Sisters, has enjoyed many benefits of her volunteering at a grassroots rugby club including being part of the Rugby World Cup volunteer workforce after being nominated by the WRU - and the WRU is asking for more people to develop their 'Welsh rugby roots'.