The logic behind the fact that the N900 is dead becuse Meego got announced is beyond backwards. The very fact that the N900 and Meego with both run QT applications is a massive possitive.
This is without taking into account that the N900 is the OFFICIAL testing device for Meego. You can even at this very moment run a working Meego image on the N900. Once the next version gets released sometime in May you will see how the 2 will work together.

Sure the first true Meego device might not be the N900 but it will be running a full working version long before then and will probably get upgraded to latest version once its out.

A little bit of research never hurt anyone. There is an entire wiki thread on this very site detailing all of this.