After yesterday’s announcement that Steve Jobs is taking a medical leave of absence from Apple until June, some analysts are speculating that Steve Jobs won’t come back at all. In a letter to Apple staff on Wednesday, Jobs said he was taking a five-month medical leave because his health issues are “more complex than I originally thought.” In that same letter, Jobs said he is looking forward to returning to Apple in the summer. Jobs will still be around for major strategic decisions, and Tim Cook (Apple’s COO)