The GRB catalog paper containing the polarization results for all 14 GRBs for which reasonable polarization analysis is possible was accepted for publication in A&A. The paper can currently be found in here.
All data used in this publication (photon lists, energy response and polarization response) will soon be uploaded to this website (see GRB light curves) while the software required to quickly reproduce the results, or to perform follow up analysis can be downloaded here (it requires a working version of the 3ML framework which can be found here).