Since January it's been rumored that Diplo dropped the news in an interview he did at the
Hard x Mouth Taped Shut event in December. I can't find anything about the interview, but I saw them a week and a half ago at Snowball in CO. Switch was not there. Although it did lack some of Switch's style a wee bit, Diplo killed it and it was in the top 5 sets of the festival.
For all I know though he could be taking some time off, I'm just repeating rumor.