The 2 GB limit defined by Apple will probably mean no serious boundary for many developers, as according to internal source no digitally signed application can be larger than this size limit. Thus Apple Store, coming next month, will have some quite large software too, the downloading of which might mean a serious task even on WLAN networks. According to internal sources the price of the programs has to be between 99 cents and 999 dollars if the application  is not a free one. The size limit defined by Apple will mean a boundary only for such business applications that work with huge databases, and there aren't many of these, maybe the maps used by navigation software might get larger than this size.