The Fitbit Sense 2 will be available in Gold, Graphite and Platinum colours with a similar design to its predecessor. It also seems to have holes for a mic and speaker.
Fitbit Versa 4 might arrive in Graphite and Rose colour options. You can see holes for mic and speaker, followed by smooth matte bezel. It will likely come without an ECG.
Fitbit Inspire 3 is shown in Black, Yellow and Pink colors. It has a Mi-band like design with the strap enclosing the tracker module.
The Fitbit Sense 2 will be the most expensive at around $299 (similar to predecessor), followed by Versa 4 expected at around $229. The Inspire 3 will be the most affordable in the lineup at over $100. There's no concrete data on pricing so far!