I agree that racial modifiers are probably gone in 6e. Good riddance.
I would assume that the plan is:
- Races have no ASIs
- Lineages will be equivalent to, and an alternative to, races. (So if you want to play an elf of a given lineage, the "elf" part is just fluff. You don't get any elf mechanics.)
That would mean, for example, that if you want to play a Drow, or Snirfveblin (did I spell that write) you would pick the same lineage, and then just describe yourself as either an elf or a gnome.
Which...works. Strangely. It only
doesn't work if you simply can't fathom that you can be a Drow without hand crossbow proficiency, or some other ability that existed in previous editions.