Yeah, definitely has some of that A26 sail design philosophy. Though the A26 sail also seems to be concentrated a lot on making the whole sail narrow at some point. The 093 image doesn't seem to imply that, the notch only seems to narrow the sail at the front of the sail base.
Here's an image accentuating possible and likely differences between older subs and this new photo.
if you're talking about 093A, then yeah, the small hump is most likely for towed array system. There's been some articles explaining that idea in more detail but I can't remember where I read then. 093B has not yet been constructed, so we don't know what sort of hump or VLS is might have.