I ran the TempLS Grid version, and it showed a considerable rise for December - from 0.518°C to 0.638°C. That actually makes December the warmest month of 2014. TempLS Mesh is also showing a greater rise with extra data, now from 0.59°C to 0.655°C. So I think it is time to make predictions (while we wait):
|2014 Jan-Dec||2010 Jan-Dec|
This is on the basis that GISS agrees with TempLS mesh, and NOAA/HADCRUT with TempLS grid. As you see, HADCRUT and GISS narrowly reach a record, NOAA with more to spare. Actually, my GISS estimate came to 0.675, so 0,68 is equally likely.
Update: GISS and NOAA have now released their results with a joint press release. GISS gave 0.68°C as their 2014 value; NOAA announced 0.69°C (re 20th Cen ave, it's worse than I thought ;)).
Update. There is an active plot of the historic record years of all major indices (and also both TempLS) in this later post.