Just my own two cents and commentary here: The Two Thunderbolt Port variant of 14-inch MacBook Pro that effectively replaced the last of the 13-inch MacBook Pros should've gotten the M4 either first or at this week's event along side the iPad Pro.
Why?
If Apple updates the lower-end MacBook Pros with the standard suffix-less version of a new given M-series SoC variant, the assumption is that the Pro and Max variants are not yet ready, but that they're probably coming sooner rather than later. This proved true with both the M1 family and the M2 family. The lower-end MacBook Pro was first to both of those and it made perfect sense for it to be so.
However, introduce M4 on the iPad Pro first and now, if you're a prospective low-end 14-inch MacBook Pro customer who is even slightly in the know, you're going to wait because you know that, with the M4 being out and in something already, the M4 next arriving in that low-end 14-inch MacBook Pro at the very least is almost guaranteed. It's a near-perfect example of the Osborne effect at work. The Two Thunderbolt Ports variant of 14-inch MacBook Pro that has just the regular M3 is probably the one Mac I'd recommend most to most folks and now it makes absolutely no sense to recommend it to anyone but the folks that have enough money not to care that what they're about to buy and hopefully use for several years is about to be replaced.
Why?
If Apple updates the lower-end MacBook Pros with the standard suffix-less version of a new given M-series SoC variant, the assumption is that the Pro and Max variants are not yet ready, but that they're probably coming sooner rather than later. This proved true with both the M1 family and the M2 family. The lower-end MacBook Pro was first to both of those and it made perfect sense for it to be so.
However, introduce M4 on the iPad Pro first and now, if you're a prospective low-end 14-inch MacBook Pro customer who is even slightly in the know, you're going to wait because you know that, with the M4 being out and in something already, the M4 next arriving in that low-end 14-inch MacBook Pro at the very least is almost guaranteed. It's a near-perfect example of the Osborne effect at work. The Two Thunderbolt Ports variant of 14-inch MacBook Pro that has just the regular M3 is probably the one Mac I'd recommend most to most folks and now it makes absolutely no sense to recommend it to anyone but the folks that have enough money not to care that what they're about to buy and hopefully use for several years is about to be replaced.