Chopin additions of markings in bars 335, 337 and 341 provide in themselves an evident image of dynamics of the final fragment of this movement of the Concerto. Excluding 
in bar 337, one can also consider them to be a complement of the markings of A:
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in bar 335 is natural even without this marking – Chopin indicated this dynamic level already in bar 329 and then there are also two crescendo waves (bar 330 and 331-334), out of which the second longer one almost directly leads to the discussed place. However, emphasising this splendid and energetic ending with an additional marking seems to be favourable for the image of the whole, hence we introduce this indication to the main text. -
in bar 341 is probably supposed to reflect the dynamic change, resulting from the more modest cast of this motif (wood instruments only). However, according to us, the change of the piano texture alone may be enough to show the contrast of instrumentation, hence the notation of A does not make an impression of being incomplete. Due to this reason, in the main text we give these indications in brackets.
As far as in bar 337 is concerned, it indicates a slightly different planning of dynamics of the ending with respect to A. While in A Tutti takes the default dynamic of the solo part with great energy, in FE the climax is clearly moved to the trill ending the solo part (marked with ), whereas the next four-bar section's dynamic level is a tier lower (). In the case of a performance with orchestra, it is not a feasible proposal; however, it is worth remembering that the link between the final trill with Tutti in bar 181 is marked in a similar manner.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Authentic corrections of FE
notation: Verbal indications