|Darksol the Painbringer|
So, are saying, by choosing Racial Heritage(Goblin), you also get the benefits of the Goblinoid Subtype, and get Stealth as a class skill?
If I choose Racial Heritage(Ogre), then do I get all the benefits of the Giant subtype, and gain low-light vision, and treat Intimidate and Perception as class skills?
As long as you are choosing a race that can be from the Humanoid subtype, it qualifies for Racial Heritage.
For example, if you choose dwarf, you are considered both a human and a dwarf for the purpose of taking traits, feats, how spells and magic items affect you, and so on.
As the example states above, taking Racial Heritage (Dwarf) would allow me to qualify for traits, feats, how spells/items affect me, etc. It doesn't mention anything about gaining new features from it, so it falls under one of those GM FIAT situations, which, many would say no, and whether that's right or not will be left in the dark until clarified by the Devs fully.
For side-by-side comparison, a Half-Orc or Half-Elf, who already possesses the Orc/Elf subtype without the feat, receives the benefits of Darkvision and Low-Light Vision, which is also ironically enough the same benefits cited within the subtypes themselves, and they can reap all the benefits of their Human heritage, since they can take Human-specific archetypes/prestige classes, favored class bonuses, and other goodies.
However, they didn't spend a feat to receive those benefits; they had them upon creation for choosing that race specifically, so I highly doubt the intent behind the Racial Heritage feat is to provide all the benefits of the subtype chosen. To explain why choosing the subtype and not receiving all the benefits of that subtype can be the case, I reference this sentence in the Beastiary:
A creature cannot violate the rules of its subtype without a special ability or quality to explain the difference—templates can often change a creature's type drastically.
I believe Racial Heritage, a feat, which, I believe all of them are normally qualified as an Extraordinary Ability, falls under that category, don't you think?