Extension or app extension?

I already have my extension in the gallery, and just recently wrote a major update. I submitted almost a week ago... if this had been an app extension, it would already be live by now. Does Apple care about extensions anymore? Should I just convert to an app extension, and possibly even charge for it. If I did go this route, how can I cancel my extension submission? I haven't received any feedback about wether my submissions was even received. :( Just wondering what other devs are doing.