Updated? 

According to this website (http://www.fortunegroup.ae/projects_burj.htm)

Burj Al Alam is estimated to be completed in 2010 and that it would be 484 m high, I do however not know how updated this page is. I didn't want to change anything without getting this confirmed, although I couldn't find any info on the offical website of Burj Al Alam.