T4 is one of the top arrangers out there in both what it does and sales wise, so it’s highly unlikely that it is being discontinued.
Are you sure you are not confusing it with the T3, as a number of Yamaha sites have them both shown, but only the T3 has discontinued shown beneath it.
Give it a rest, or get the meds changed.
Hope this helps
Live entertainment, Real Ale, Great Scenery, Great Beaches, why would anyone want to live anywhere else (Iï¿½m definitely staying put).