Should SONY keep producing new DT lens offerings?

[DonSchap]

I went looking at the Canon site, to see what was happening and I happened to notice that they have include two new lens offering, along with the EOS 7D and EOS 1D MkIV camera introductions.

A pair of kit-style apertures:

• EF-S 18-135mm f/3.5-5.6 IS (MSRP $499.99)
  EF-S 15-85mm f/3.5-5.6 IS USM (MSRP $799.99)

Both these lenses are designed for APS-C sensor DSLRs ... and would have limited use on the FF. Obviously, every thing shifts 1.6x (Canon's DCF) to the right, making them, in operation, effectively:

• EF-S 29mm-216mm f/3.5-5.6 IS
  EF-S 24-136mm f/3.5-5.6 IS USM

Being "IS" equipped lenses, it probably makes sense that Canon would need to supply these to their users, but would SONY be so "trite" as to add even more dark zoom lenses to their "DT" selection? Personally, I hope this nonsense is over.