New Neshomas by the thousands!

The sages say (Yevamos 64b) that [Moshiach] ben Dovid will not come until all the neshomas are finished from the body, and the meaning is that now in exile there are very, very few new neshomas—the vast majority are gilgulim (reincarnations). But when these neshomas will be finished and new neshomas will come then there will be the redemption and a renewal of the ohr haganuz (hidden light) and there will be new neshomas. This is the meaning of "a young one will be for a thousand, etc."—that Hashem said: I will make fruitful and I will multiply you so that many, many will be born from you in order that all the neshomas should be finished from the body. This is the time of the redemption and Hashem says "achishena" (I will hasten it) because he will speed up the time of the redemption.

Shelah haKadosh, parshas Bereishis (Free Translation)