Here in the UK, the D5000's launch price is about 100GBP higher than the current street price of the D90. Warehouse Express lists the D90 body only at £619, D5000 at £719. OK, there's a memory card & bag with the D5000, but is that and the swivel screen worth it against the cost and the stuff you lose? Even Jessops, known for sticking to RRPs, has the D90 at 70GBP less than the D5000.
It's going to have to come down in price very quickly to sell here.