I've just stumbled upon some very good news, in the form of two books:
1) Inside Microsoft SQL Server 2005: The Storage Engine - Kalen Delaney
2) Inside Microsoft SQL Server 2005: T-SQL Programming -Itzik Ben-Gan

Kalen Delany's Inside Microsoft SQL Server 2000 is the best SQL Server book that I own - the only thing I would change about it: make it twice as big. My only hope is that that's what's going on here with these two tomes.

The only bad news associated with these books is that the first won't be published until Sept, and the second won't be published until May. (But hey, quality takes time).