I would certainly bring crampons. Microspikes just don't cut it on the steep angle snow you will encounter.
Also keep in mind that although as a whole the Sierra is very low this year it looks like up high above 10,000 feet there is allot more than previous years. This article outlines this:
http://www.pcta.org/2014/state-snowpack-pctjmt-high-sierra-18573/It shows the Kern as being 42% of normal compared to 20% last year.
