DB2 quickly
Sounds like IBM is going to be MSFT to the punch with a new release of DB2 that is scheduled to be out by the end of the year. The Office Connect feature which allows direct consumption of cubes in Excel sounds like a particular Yukon killer. The pressure is building with this release of DB2 and the last release of Oracle.
MSFT really needs to get that thing out the door. I haven't seen much about the Yukon beta 2 that is supposed to be out this month.