Eadon was right: no IE gain. Check the link again now!
Click on the link, with the graph of statcounter, and you will se he was dead right. No IE gain.
It was quite obvious, such a sudden trend shift should be met with suspicion.
Anyone with experience in datalurking on statcounter knows: Never use the most recent data of statcounter on a given period. (unless it is the official monthly graph, that will show up on the mainpage the first of the following month)
Always sort out the last week, because , these data are provisional.
I have seen so many sites make this mistake. Unless it is meant to annoy IE fans with false hope, this is useless.