Of course they are! The Times of Israel is reporting that an Israeli TV report shows the air force gearing up for an attack on Iran.
The report, screened on the main evening news of Channel 10, was remarkable both in terms of the access granted to the reporter, who said he had spent weeks with the pilots and other personnel he interviewed, and in the fact that his assessments on a strike were cleared by the military censor.
Given the volatility in the region and the fact that virtually all of their neighbors have vowed the destruction of Israel, one would think this level of preparation is status quo.