This data from DfE has been published today, 25th May 2017.

https://www.gov.uk/government/uploads/system/uploads/attachment_data/file/539158/SFR29_2016_Main_Text.pdf

 The headline messages are;
 The number of children and young people with new EHC plans made during the 2016 calendar year has seen an increase of 8,171 (29.3%) when compared against the combined number of children and young people with statements and EHC plans made during 2015. 
 Children and young people receiving provision in mainstream schools accounted for the largest percentage of children and young people on roll at an establishment with EHC plans made in the 2016 calendar year (63.3%).