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Jackson reviews this sub-field. Could be a good starting point for new investigators!

Eulaers et al present two new time delay measurements, including one (in SDSS J1206+4332) to 3% accuracy! HS2209 is a new delay, now measured to +/- 25%. They adopt a "netflix" approach to the measurement, combining the results from four different techniques. Interested to see how they weight them.

MacLeod, Ramsey, Agol & Kochanek use a high resolution 11.2 micron image of MG0414 taken with Michelle on Gemini North to investigate a lens model that includes an additional (third) mass component near to the merging pair of images. The radio and mid IR positions and flux ratios constrain the substructure's Einstein mass to be 10^(7.3+/0.2)Msun. They do not extrapolate to its halo mass, or consider the possibility that it is not at the lens redshift (0.96), but it's a pretty solid detection. They point out how useful JWST will be for this kind of work in future.

Formed in summer 2012, the LSST DESC sets out its plans for the next few years, preparing to try and measure the accelerating expansion of the Universe very accurately indeed. Most of the work between now and 2020 will be on trying to predict, understand and mitigate against systematic errors in this measurement - so analysis pipelines need defining, implementing (in pieces) and testing on simulations. The strong lensing case is primarily time delay distances from ~1000 lensed quasars and SNe, but multiple source plane systems could play a role as well.