The Secretary General has prepared an explanatory memorandum outlining the legislative process that would need to be followed by the Church of England to enable women to become bishops. Although prepared for members of the two Houses of Parliament it has been issued to members of General Synod and made available online.
I have also placed an html version online here.
The memorandum concludes, “It would, therefore, be possible for legislation introduced in 2013 to complete all its stages in the lifetime of this Synod, which ends in July 2015. Pending the discussions with all interested parties in the early months of 2013 it is too soon, however, to offer a confident prediction of what the timescale will be given the imperative need to avoid a second failure.”