The real question is will they get distribution volume up to meet demand with this. Despite it being on the market for 5-6 years, the Raspberry PI Zero/Zero W has never been widely available at its MSRP. Sure you could get one from RPi/SBC shops of all sorts, but only one per order. So the shops either never had enough to sell as many as people wanted, or they only cared to sell them as loss leaders.
If they aren't going to up the memory, I don't care for any speed improvements. I care about everyone being able to readily buy them at the $15 (or whatever the price Raspberry Pi claims for it) in whatever volume they want. The fact they you couldn't order a half dozen Raspberry Pi Zero boards from Amazon or even on eBay for $5 each demonstrates that Raspberry Pi has been unable or unwilling to actually make the boards truly available for hobby usage.