There are reports that this September, the Palestinian delegation to the UN, which has observer status, will attempt to introduce a new "Uniting for Peace" resolution calling for recognition of a Palestinian state within the 1967 boundaries. In fact, a 2003 Arab-sponsored "Uniting for Peace" resolution has already called for "affirming the necessity of ending the conflict on the basis of...the Armistice Line of 1949."
If adopted, a new such resolution would not be binding on Israel or on any other state. Under international law, except for cases where a former border is inherited by new states, borders can only be delimited by agreement between the states concerned. No UN organ has the authority to delimit boundaries.
Even if the Palestinians were to declare themselves as a state, the General Assembly could then only accept Palestine as a member of the UN if there is a recommendation to that effect from the Security Council, where a permanent member of the Council could veto such a recommendation.