I'd say the chances are better as of today..Brian has mentioned on his site that they are currently looking into booking some venues.
Also, there is word that some gigs are already lined up for early Spetember in Canada (read the "Canadian Dates" thread for all details).
I say it's looking better then it did earlier this month..but no one knows for sure. If the Tour in Europe goes well (which it more then likely WILL) they will get serious about playing on our continent.
What a grand day that will be....it's been 22 years since "Queen" last played here, unless you consider the Vegas Premiere gig.
I say BRING IT ON!