If you're going for a blu-ray player, in truth, ya' might as well just go ahead and get a PlayStation 3. They're the best. PS3's already have online connectivity (indeed, most good blu-ray players do...but that seems more an afterthought for those) and the service is free, and when your PS3 updates, it usually updates the latest blu-ray standards along with it. All you need is a broad band connection.
And, if you get into gaming....so much the better.
Better to have and not need than need and not have.