Reading the article at the moment. They quoted a line Genie has early on and it's got me sold.
When Aladdin first stumbles across the lamp in the Cave of Wonders, a big cerulean cloud whooshes out of the spout, forming into Smith’s goateed Genie, complete with a topknot. After a quick musical introduction, Smith’s swagger shines through as he asks a dumbstruck Aladdin, “You really don’t know who I am? Genie…wishes…lamp? None of that ringing a bell? Wow, that’s a first.”
Yeah, that line sounds VERY Will Smith to me. THAT's the guy I grew up seeing in ID4 and Men in Black. Now I'm excited for this!