However if it truly wants to be considered a currency, the developments it needs are more ATMs (like the one Vancouver), more merchants accepting bitcoin, and more adoption in terms of velocity.
I wrote about it here: http://blog.oleganza.com/post/66953255676/transactional-curr...
Now that's 1 bn people there, so if it finds broader adoption in the country we could see further price increases (if we divide all Bitcoins that will ever exist by the population of China, everyone there will get 0.02 BTC). So if the current trend holds true and the adoption takes on there.. Now let's say India, Africa or most of south america get wind of it.. Africa in particular has difficulty with local currencies and a relatively good mobile network, so it is well possible and the other countries certainly don't want to be left out either. And then there is Europe and the rest of Asia..
So let's say 5 bn people want some part of it (just to buy 1/2 carton of milk), we are at 0.004 BTC. But then, some are greedy and want more than average, so.. you might get the idea.
Edit: thinking about it, at current price ca. 0.001 BTC / 1/2 carton of milk, you could actually buy all those people one serving (excluding shipping). Now if people want to buy cars or houses or ponies, we have to split that a bit further.
But it's warped because I can't buy things in bitcoin. Not much, anyway. So I don't know what to think about $1,000 = 1 BTC.
There are only about 12 million BTC. The limit of just under 21 million will be hit in 2140.