Hmmm Albizia usually has pink flowers and the stem of the flower is much thinner than this. I do not think its an Albizia, i think its flowers might come out to be yellow and it could be a mimosa of some sort or one of the acacias.
Here is a close up of the mentioned albizia,notice the difference on the preemergence flowerbuds
Anyhow, keep your eyes peeled and please post a picture when it blossoms!
I might be wrong though , sobe sure to check for yourself also!