My life is AR. I'm the CEO for an AR company, I speak write and live and breathe all things AR.
Snapchat is poised to be the most important AR company around for several reasons. 1. They have a MASSIVE userbase that is comfortable with sharing their lives 2. That userbase has already shown an interest in AR - and yes whether you like it or not their filters are on the AR spectrum - the filters system maps, tracks (SLAM) and modifies in real time.
Their Spectacles release has the potential to build the largest real world image dataset on the planet - something needed (for reasons I won't go into) for AR everywhere. Think on the order of 1.8 Billion images per month with depth data from the stereo cameras (30FPS * 10 sec snap * estimated 20 snaps per day * estimate 100k spectacles users in first month).
Most people have no clue what is going on in the AR world, and I can tell you Snapchat is going to be formidable. If they can invest in a VRD, then they could win the whole AR market, but they need to raise more than 4BN to do that probably.