At the time of writing these lamps have only been on the market after the latest generation of this lamp has been sold out everywhere for MONTHS. The bulbs themselves are fantastic, easy to set up and control, and integrate beautifully with Google Assistant/Home and Alexa. However, if you have one of the older models you may want to store it in different rooms as the color temperature available for the new model will not match that of the old model. For example, 3200K was available on the previous model, while the current model jumped from 3000K to 3500K. I don't give credit to the incandescent bulb for the simple reason that the available color spectrum is wider, even if it lacks a few stops in the middle. With the old model, 2500 K was the minimum. The new one goes up to 1500k. (Both versions are capped at 9000K.) As you can see below, each has the same number of options but spread differently. Hopefully the table looks good as I can't use a fixed font width.
Lamp LED Yeelight Smart LED Bulb W3 (YLDP005), E27, A60, 8 W, 6500 K
47 Review
Lamp LED Xiaomi Mi Smart LED Bulb Warm White (XMBGDP01YLK), E27, 8 W, 2700 K
26 Review
Lamp LED Yeelight Smart LED Bulb 1S, YLDP13YL, E27, 8.5 W, 6500 K
43 Review
Ceiling lamp Yeelight YLXD013-B, 50 W, number of lamps: 1 pcs., color: white
62 Review