Both new Meteorites are now up on the Guerlain website. I panicked and ordered them from Harrods last night because the Guerlain website only had Pearl Glow, but this morning they're both up. I'm not too happy about the extra shipping I had to pay, but I guess that's the price of being impatient.
I've got the Meteorites! They are both nice, Pearl Glow looks like a few from the past (don't quote me on it though, not sure which ones it reminds me of). Pink Pearl is quite bright, probably better as a blush/highlighter than all over powder. Haven't tried them yet. Both my are pretty dusty, my Pearl Glow only has 3 big balls and looks emptier than Pink Pearl, but they both say 25 g and of course are nowhere as full as the promo pictures.
I tried Pink Pearl today and it's a nice subtle pink blush. I definitely wouldn't use it all over. While it took a couple of swipes to show up properly, it would most certainly be too pink all over. It's very pretty though.