Got mine! Thanks for the tip about changing the display size to get a percentage next to the battery. Mine came with a 60% charge. My last Kindle was a Paperwhite, and I'm loving the page-turn buttons! I also like the bigger display. I'm glad I don't have the first Oasis to compare to because I like little things, but I've been wanting a bigger Kindle display for a while. I don't know how comfortable it's going to be to hold long term, but I like that you can easily switch hands if one gets tired.
The sleeve I was planning to use is a tighter fit than I'd like, so I'm going to be shopping around for something else. I really hope more options pop up on Amazon soon.