Congrats!
It's a great start! It also means it could continue if you post more good shots.
The frustration is that you need to fill release forms each time there's a person or a recognizable piece of architecture in your submitted image. I'll admit it's a major pain.
I started having a few requests two years ago, then i was receiving Getty request every three weeks or so. It's only three months ago that i started the process for good. 51 images in, and still 150 images to fill and finish with model releases!
I seriously doubt it's a good financial deal, i don't think i have sold anything, but haven't checked for quite some time.
The interesting detail is that getty was only accepting a specific amount of cameras for submitted shots. There was an official list consisting Mostly of dslrs or specific cameras like the leica x1.
However i received an email last week requesting licensing for 5 shots from the ricoh grd iv! I was pretty surprised as all my shots in getty were from my leica m9, canon 5dmkii, as well as my leica x1. It's a good thing to know for serious compacts users!
Again, kudos for the shots!