I'm clearly not understanding your entire train of comments.
I've been an OM devotee since 1974 (apparently before you were born) and have pre-ordered the E-M5. I have been using the E-510 with all my original OM glass, with the benefit of in-body IS with OM glass settings (to great effect, I might add), as well as some great Oly 43 glass. With the E-M5, the digital side is returning to a size that matches the OM series (actually smaller!). Using m43 lenses, I will gain AF, yet I can still use my OM glass, again with in-body IS. I can also use my 43 lenses.
Oh, and I still shoot with my OM-1(3), OM-2n(2), OM-2SP(2) and OM-4T(2).