Logitech MX Master 4 mouse: Here’s what’s new [Update: Back in stock]

Update November 11: The Logitech MX Master 4 has regularly been out of stock since its initial launch last month. Right now, however, it’s in stock and ready to ship on Amazon. Act fast if you’ve been on the hunt for one. It’s clearly very popular, so who knows how long this availability will last.

The Logitech MX Master line of mice has become a staple in the setups of Mac users everywhere. Now, the company is out with the highly-anticipated MX Master 4. It packs a handful…