OP, do you mean the 130mm front / 115mm rear original version or the new 150/140mm longer travel version?
If the shorter travel one, I’d say you’ll be fine on a large. I’m bang on 6ft and found the large perfect for me when I swung a leg over one a couple of years ago. The problem with sizing up to XL on the shorter travel version is not so much the reach / ETT, but the long seat tube which may restrict your dropper options. Great bike, I really regret not selling my 27.5 Anthem and buying one when they first came out.
If the longer travel version, then you’ll really want to get a test ride. They have a really long reach and funny geo that may not suit everyone.