I've pretty much decided to upgrade my m4/3 gear and attempt to continue ignoring the irrational FF voices in my head. But I'm struggling a bit with whether to buy a used E-M1, 40-150/2.8 and teleconverter or wait until the next generation comes out. C-AF performance is important to me and I'm guessing that will be improved with the E-M1 mk ii. I also don't want to buy an E-M1 then have the "new and improved" version come out a few months later. The range and expected size of the 100-400 is appealing to me. On the other hand, life is short and I don't want to spend the next one or two years relying on my old 7D or being frustrated with the m4/3 outfit I have--E-M5 with P45-150--for my occasional attempts at birds, bees, bugs, animals and sports. Based on historical patterns, product life cycles, industry events, etc. what are your informed (or uninformed) guesses about when these might actually be in stock and available?