Michael F (25 Jan 2011)
"Abbas: We will not make unilateral declaration of Palestinian statehood - Haaretz Daily Newspaper | Israel News"

Israel has been alarmed in the past two months by a string of countires recognizing Palestinian independence, especially in Latin American states including Brazil, Uruguay and Argentina.  Some analysts say this could be a precursor to a move by the Palestinians to seek full United Nations membership if efforts to revive the moribund peace negotiations fall through.

In the past Abbas confirmed that a unilateral declaration of independence was an option.

http://www.haaretz.com/news/diplomacy-defense/abbas-we-will-not-make-unilateral-declaration-of-palestinian-statehood-1.338508