[Dadoo]

Bellis spp. are quite common here in my region. They are small white, pink and red daisies. The 3 kinds are always, always found together. There was originally, one color- white, brought from england by western-bound settlers long ago.
Accordingly, a red variety, previously unrecorded was spotted.
These hybrid pinks now arise in every population, but only in the presence of reds and whites.
Here is my perspective in reference to the query:

Evolution only takes one generation at a time.
One, small, seemingly insignificant change in physio-morphological construct and related behavioiur adaptation is indeed, Evolution.
One mutation, whether inherent or environmental, is in this way evolution.
When the mutation succeeds, generalization occurs much more rapidly than when the mutation is a liability.
However, many mutations are neither successful nor detrimental. The amalgamation of these seemingly insignificant changes are relativized in the moment yet telescopically compounded through time, amount to a complete morphological transition.

So, my short answer or belief is "yes" , these changes occur immediately and within the ground-zero generation,and, obviously, are either accepted or rejected through "natural selection", or "unnatural"; as it were. This occurs constantly all around us in the lab and out.
How many micro-adaptations add up to a full-fledged adaptation?
A silly question, indeed.
To parametize, however, is to lineate.

As far as speciation is concerned, that is dependent upon the scope of the observer, as the taxonomy and nomenclature proves; the parameters of sciences own definitions are in constant flux; ever-refining.