Last month we has some magical figures officially coming form Apple. The 500million downloads and 15000 apps on the Appstore seem to be just the beginning. Apparently the total no of iPhone apps live on the AppStore at the moment is 20505. This is 5000 up from Jan 16th when the 15k mark was officially crossed.
Such a mad rush for iPhone apps certainly justifies all the similar app market plans by other manufacturers.
Figures via Apptism
Also see: iPhone milestones