Via retailers in the UK, it was said that Brawl would begin releasing throughout the PAL regions in June this year. However, Nintendo UK's office has now stated that it "is a rumour and purely speculative, Nintendo is yet to confirm any release dates for Smash Bros."
"As North American preps itself for Super Smash Bros. Brawl, and following multiple delays and the game's recent debut in Japan, Nintendo has finally announced - at the Micromania Games Awards in France - that the game will be released across Europe on June 6, 2008."
Although it seems possible, there is a chance that another delay could be imminent. This may be why Nintendo isn't confirming anything right now.
There is still no word on a release date for Australia.
Source:
Aussie-Nintendo.com - News