Yeah, I noticed the thread!
Yes, the Exec was released. IF I remember correctly, Osborne Corp. announced the Executive while they still had a boatload of O-1's in the warehouse which immediately became obsolete and no one wanted and O-1. This forced the FIRST bankruptcy on Osborne.
ppcmini is correct regarding the case. The original O1 came in the tan case which proved to be a bit flimsy for, shall we say, more vigorous users. The gray/blue case resolved most of those problems.
The primary differences between the O-1 and Exec gray/blue case was as pointed out earlier. Integrated fan with the handle and the larger (usually amber) 7" screen.
Also, you would think Osborne would learn from their mistakes, but you would be wrong. They did the exact same thing when they announced the Vixen! Warehouse full of Execs suddenly obsolete! However, the only differences between the Exec and Vixen was the footprint of the case. Vixen was smaller with the hinged keyboard instead of the free-falling keyboard. Personally, I prefer the Exec/O-1 keyboard with the ability to prop the computer on the upper edge for a better viewing angle.
Curtis