Please forgive if this is covered elsewhere, I've been looking and having zero luck.  

I am excited to see that the variant class features from Unearthed Arcana are apparently in Tasha's Cauldron.  However, I don't see them on the list of purchasable content from the book.  I just need the Variant Ranger abilities and would rather not buy the whole thing yet if I don't have to. 

I've also turned on "optional class features" for my character but they don't come up (at least not without buying the book?).

Is the only way I can access the Variant Ranger Features by buying the whole book?  

Just hoping for some clarity.  Thanks!  

Yes, the only way you can use the optional class features is by buying the entire book.

It would be great if they could offer them as individual purchases, but I’m not aware of any official word on whether or not that’s something they’re working on doing.

Okeydokey, thanks for the clarification Saga and Stormknight.  Looks like I'll probably be buying the whole thing then.

So things like "Tireless" (of Deft Explorer) and the Favored Foe Hunters Mark option are included?

Quote from ireclusado >>

Okeydokey, thanks for the clarification Saga and Stormknight.  Looks like I'll probably be buying the whole thing then.

So things like "Tireless" (of Deft Explorer) and the Favored Foe Hunters Mark option are included?

 For your previewing pleasure, let me tell you how they have changed between UA and official release:

• Deft explorer: no longer lets you pick the order you get its options. You get canny at 1st level, roving at 6th, and tireless at 10th.
  • Canny now requires you yo pick any 1 proficiency you already have to double (like expertise) instead of picking from a list you may or may not have.
  • Roving stayed the same
  • Tireless is now 1d8+wis instead of 1d10+wis and number of daily uses is proficiency mod instead of did mod.
• Favored foe: no longer uses hunters mark. Now it is a free action (no BA) when you hit with an attack to mark that increases damage by 1d4 and requires concentration. Damage die increases at level 6 (d6) and 14 (d8), and number of uses is prof mod.
• Additional spells gains summon beast, summon fey, elemental weapon, and summon elemental. And loses warding bond, blinding smite, tongues, death ward, and awaken.
• Fighting styles: doesn't get interception or unarmed
  • Blind fighting is now just 10 feet of blindsight. Huge buff (invisible creatures can still hide from you).
  • Druidic warrior is unchanged
  • Thrown weapon is now +2 damage (same as dueling) instead of +1.
• Martial versatility moved to every ASI instead of every level for all classes that get it.
• Spell versatility sadly did not make it into any class that had it in UA.
• Spellcasting focus, mechanically the same, but doesn't refer to druid.
• Primal awareness loses detect magic and locate animals or plants 
• Fade away renamed nature's veil and number of uses changed from 1 per short rest to prof bonus per long rest.

I can compare the beast master companion changes if you want. I will note that a "beast of the sea" was added.

Wow, thank you DxJxC, that is all SUPER helpful!  

And while I really appreciate the offer to compare the Beast Master companion changes, I'm going with a different subclass with this one, so no need. 

Looks none to bad.  Will take some thought still to figure out but I have all the info I need.  Thanks so much everyone! 

Ugh, I had this same question, and was a big determining factor if I buy anything from it. I would think that purchasing a subclass for (one? all?) classes would unlock the CFV for that particular class, if not, for all the classes similar to how buying any warlock subclass unlocks all the new invocations (at least in the same book)

Quote from Noxx89 >>

Ugh, I had this same question, and was a big determining factor if I buy anything from it. I would think that purchasing a subclass for (one? all?) classes would unlock the CFV for that particular class, if not, for all the classes similar to how buying any warlock subclass unlocks all the new invocations (at least in the same book)

 Honestly, I would have thought the same thing. Everything else that uses tools can be bought piecemeal. Maybe these could be piecemeal too, I could see paying 2$ per class for optional features (maybe only 1$ for some like rogue that only get 1 or 2 features).

They knew most people would buy the options and skip the rest of that godaweful book so they stuck the one portion they knew everyone wanted behind the full purchase for the entire product.