The long accent under f2 at the beginning of bar 2 in #AW is the original concept of dynamic markings in these bars. In A one can see that Chopin rejected the accent (placed above this note) in favour of a pair of 
hairpins. The hairpins were incorrectly reproduced in GE1 (→GE1a), yet only the fact of beginning diminuendo in GE2 (→GE3) from the beginning of bar 2 may be considered as a quite significant change. In FE and EE, diminuendo immediately follows crescendo. In the main text we reproduce the signs of A, the only ones written undoubtedly by Chopin's hand.
Compare the passage in the sources »
category imprint: Differences between sources; Corrections & alterations
issues: Long accents, Inaccuracies in GE, GE revisions, Deletions in A
notation: Articulation, Accents, Hairpins