The Moto X isn't dead yet – in fact, Motorola is offering a good deal on last year's flagship phone right now. For the next two days, a 32GB off-contract Moto X is only $349. That's $100 off the regular price.
The discount is automatic and doesn't come with any warning about limited stock. It's pretty likely that Motorola is trying to clear stock of the Moto X in advance of a new device, which is rumored to be coming later this summer. If you don't like waiting, this is your chance to get a phone that's still pretty snappy after all these months for cheap.
Also keep in mind the unlocked Moto X (works on AT&T and T-Mobile) will be getting Android 4.4.3 this week. You've got until Thursday at 11:59PM ET to decide. Yes, developer editions are included.