Dear Pentax SMC-DA* 50-135mm f/2.8 ED

Dear Pentax,

Please consider a
SMC-DA* 50-135mm f/2.8 ED [IF] SDM II

Even if, the only upgrade, is the inclusion of rounded aperture blades, this would make an excellent addition to the K-5.

Still deciding whether to buy the 18-135 WR with the K-5, or get the 18-55 DA WR and SMC-DA* 50-135mm f/2.8 ED [IF] SDM.

Have waited very patiently for the best camera from Pentax, so if an updated 50-135mm f/2.8 is due, I'd rather get the 18-135mm now, and buy the faster lens next time.

Really prefer the improved bokeh rounded aperture blades provide, especially for distant bright out of focus lights, if have to stop a lens down a little, depending on the depth of field required for the shot.

Thank you kindly Pentax in advance, and especially for the K-5,

Dcuk