Re: need a new TOHATSU
pine_island_fred...I think you're getting confused about the 2-stroke issue. The "old" technology is carbureted 2-strokes. These are the ones that are going away due to emission issues. The "new" technology is the DFI 2-strokes, which meet all EPA regulations and will be in use for many, many years to come. The Tohatsu 50 TLDI model is the new, DFI technology motor and you don't have to worry about them going away. They meet/exceed all the EPA standards. Other mfgs have their own version of DFI 2-strokes (Evinrude E-Tec, Merc Optimax, Yamaha HPDI). These all meet EPA standards and are NOT being phased out or banned.
Some mfgs, such as Yamaha, still sell a few CARBURETED 2-strokes. These will ALL be finished in 2010. Currently the EPA allows mfgs. to earn "credits" for their "clean" motors which then can use to offset their "debits" for selling "dirty" motors (carb. 2strokes). Yamaha has enough credits to allow them to sell some carb. 2-strokes. But in 2010, all bets are off...EPA will not provide credits for clean motors which means in 2010 NO carb 2-strokes can be sold.
So in your case, unless you can find a Yamaha carb 2-stroke that you want to buy and store in your garage, I wouldn't worry about it. When you're ready to buy, the new technology DFI 2-strokes will still be around and still meet the EPA emissions rules.