Wales' youngsters finished fourth at this year's junior showpiece.
"In terms of our standing in the world, last year at Under-19 level and this year at Under-20 we've finished in the world top four and that's very promising," said WRU chairman David Pickering.
"But what's also very promising is the number of people coming through, some of whom have started playing regional rugby - people like Dan Biggar, Sam Warburton, Darren Evans, Gareth Owen and Jonathan Davies.
"These are all people playing some form of regional rugby and it's very encouraging that they are making a stand on the world stage.
"There is still some way to go, but some of the systems and structures we have put in place - such as the academy set-up we put in place four years ago - are paying dividends."
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