just got my iphone4 white 16gb today..
the guy entertaining me said that most branch may have the iphones,
but the stock only available if u want register new number..
if u want upgrade from existing celcom plan to iphone plan, suddenly(magically) the iphone stock is finish for u..
because in the branch they seperate iphone dealer booth and celcom booth for paying bills n stuff like that...
so for the dealer, if they show the new number form filled up they can claim commission..(bcoz get new customer joining celcom, but actually already existing celcom user but crazy for the iphone4  )