It will be available for purchase in 2024

It’ll measure blood oxygen saturation / include a pulse oximetry function.

'blood':4 'function':11 'includ':7 'll':2 'measur':3 'oximetri':10 'oxygen':5 'puls':9 'satur':6

It will eventually be tied up in litigation like the pulse-ox sensor on the watch

'eventu':3 'like':9 'litig':8 'ox':13 'puls':12 'pulse-ox':11 'sensor':14 'tie':5 'watch':17

It won't be available for purchase in 2024 

It will be available in a range of colours

There will be a higher memory model sold for more money at launch (think 128MB vs. 256MB models)

'128mb':15 '256mb':17 'higher':5 'launch':13 'memori':6 'model':7,18 'money':11 'sold':8 'think':14 'vs':16

'100':4 '330':6 'feet':7 'meter':5 'waterproof':1

There will be a gold version (real gold, not just gold colored)

'color':12 'gold':5,8,11 'real':7 'version':6

Improved health tracking if you pair it with an apple watch (ie better data if you wear both than either by itself)

'appl':10 'better':13 'data':14 'either':20 'health':2 'ie':12 'improv':1 'pair':6 'track':3 'watch':11 'wear':17

https://www.yahoo.com/lifestyle/rumors-ramp-apple-smart-ring-120908847.html

End date will be changed to match public launch date once announced.