The Celtic League champions have sold more than 15,000 tickets for tonight's friendly match against London Wasps and are confident of beating Swansea City's stadium record of 16,733.
More than 3,000 tickets were sold on Tuesday alone after it was announced that Charlotte Church - girlfriend of Ospreys star Gavin Henson - would be singing before the game.
Ospreys managing director Mike Cuddy said: "We've had an absolutely phenomenal sales period over the last few days and to already have the highest-ever crowd in the history of regional rugby in Wales is amazing."
Nearly 40 players were involved in the first Wales Under 18 training session of the season. WRU National Performance Manager Gethin Watts is excited at the potential shown by the group and expects the Regional Under 18 Championship to hone their skills even further.
The WRU officially unveiled the new pitch today in time for Wales to take on Australia in the first of the Dove Men Series autumn international matches this Saturday. Head Groundsman Lee Evans and colleague Craig Campbell reflect on the 15-week project and look ahead to a pitch perfect future at Millennium Stadium.