Will there be an option to buy individual option class options from Tasha's the same way one can buy subclasses? 

Thank you for the quick response! I do hope the team reconsiders this stance. Especially for those wanting to play the new and, many would say improved Ranger (or to give classes like Sorcerer a nice bump in utility). It would be very in line with how other aspects of books have been handled. 

Quote from Stormknight >>

Hi there,

this isn't something that we're planning to offer.

The Optional Class Features that are published within Tasha's Cauldron of Everything require the purchase of that sourcebook to use (or to have it shared with your character within a campaign).

 The whole sourcebook? Not any other part? May I ask why that decision was made?

So do I need to purchase the whole digital book or a specific part? I already own the physical copy and dont want to have to purchase the same content twice that I already have... any answer is helpful as I want to make sure I'm building a character correctly before I resume my next session.

Quote from Myrrdyn_Whitefall >>

So do I need to purchase the whole digital book or a specific part? I already own the physical copy and dont want to have to purchase the same content twice that I already have... any answer is helpful as I want to make sure I'm building a character correctly before I resume my next session.

 You gotta buy the whole book again here to gain access to the Class Feature Options. Or, if you are in a campaign with someone who has and content sharing has been enabled for that campaign, you can use those in that campaign.