Captains,
It's 12 (twelve, Karl) years since FSX release!
Great sim, the last and the best one from Microsoft. (EDIT 04/2020: hopefully not anymore)
Space Shuttle was our first FSX product...
We are sure that FSX will continue to fly for many more years, as FS9 does, but it's time to retire FSX officially.

To add even more drama, we'd call it the end of 32-bit era, which means P3D2-3 are retired as well.

Technically that means no more updates, no new developments for 32-bit sims. 
The upcoming 757 CAPTAIN III Freighter and -300 expansions for FSX/P3D3 will be released and updated as usual. But they are going to be the last ones for 32-bit sims.

GOODBYE FSX! :'(