Yes, I did it. Finally. It was on my todo-list since last year and I decided, in this moment of confusion and 100 things to do, to update.
Why? Because Wordpress 2.7 was released recently, and I decided that I was "late enough".
Codename of this release? "Coltrane"! Yes, like [en:John Coltrane] ;-) .
Update: And this update comes from my iPhone! I can finally use the WordPress app.