Hi Bati, I suppose the simple answer would be YES! However to expand on this a bit:
IMHO when J.K. uses the term "What Is" i think he is referring to "What Is" TRUE which is SEEING when we use the approach of Negation, in other words if we Negate "What is not" from the subject that we are investigating we will be left with "What Is" Take Love as an example, if we use the positive approach we would say love is ..............& proceed to try & define love, but we would be defining it from a limited (disorderly) fragmentary point of view based on the structure & framework of our accumulated past, in other words "THE ME" Whereas if we use negation by saying is love jealousy? Is love envy? etc etc there will be seeing of "WHAT IS" I say "SEEING" because there is no "You" or "Me" that sees there is just "SEEING" this is because through negation there is no building & accumulation of the "False self" through it's divisive conditioned false views,definitions & incomplete concepts etc based on our DEAD experiences of the past. The other reason that there is no "ME" who sees this is because what he is talking about is Unknowable (TRUE). Truth transcends?? "The Known" which is always incomplete & divisive (conditioned). Truth can never be possessed by the "Knower" the "ME". You cannot know Truth. Truth Is!
THOU ART THAT!
To quote J.K. on this subject:
So, through negation of what is not love,love is. I do not have to ask what love is. I do not have to run after it. If i run after it, it is not love, it is a reward. So i have negated, I have ended, in that inquiry, slowly, carefully, without distortion, without illusion, everything that is not- and the other is.
Me Again!
In order to SEE "What Is" there must be "Choiceless Awareness" which IMHO is watching without conscious interpretation, without condemnation & justification, without calling things good & bad. This Awareness must be Choiceless, because if we observe with a preconceived motive we shall be prejudiced in its favour; and our observation will be too optimistic or too pessimistic.
Choiceless Awareness is observation absolutely unprejudiced, scrupulously neutral. It is Awareness of the false as false which is also the Awareness of the true as true.
To quote A.D. Dopeshwarkar who IMHO was a leading authority on interpreting what J.K.had to say:
It is when alertness reaches a point of such intensity that, effortlessly & spontaneously, it discards all memories & aversions, all fears & hopes & is solely & supremely concerned with the entire content of the present moment, outer & inner, subjective & objective, without seperating the two, without a sense of duality between the Me & the Not Me, both being only two aspects of a single integral experience; -such a point of supreme alertness Krishnamurti calls "Awareness".
Awareness is of the movements of the conscious mind, but in itself is not a movement.
IMHO I think it is what Sri Nisargadatta refers to as "Spontaneous Apperception"
I hope this makes some sense to you!

KK
TAT TVAM ASI