THE 998 gets reshaped, more aerodynamic sheetmetal while retaining the iconic 911-design theme. Rumors persist Porsche is working on a boxer eight for the car, with displacements of 4.2 liters, 4.5 liters, and 5.0 liters, plus at least one biturbo later. Other rumors say the boxer six needs to lose displacement for emissions and fuel-economy standards, and there may be a lightly breathed-on turbo for “base”versions. Whatever the case, we do know the launch date has slipped a bit, thanks to the economy and the whole VW-Porsche fiasco. And we know that the 998 will launch in the usual 911 cadence, with the coupe and S coupe first, then convertible and Carrera 4 a year later, the C4 coupe and cabrio, 998 turbo, and GT3 successor a year after that,…