Ten more in the pipeline, so the rumor goes. Well I hope it turns out to be fact, not just rumor. I wasn't happy when the holy trinity came out a few years ago and two of them happened to be 'Pentaxized' Tamron jobs, namely the 15-30 and the 24-70...both F 2.8's.
But just this month I bought a new Pentax 24-70 and I know it really is a Tamron, but so far and I caution it is early innings ...couple weeks...but so far I really don't have complaints about this lens. Pix are sharp, I love the constant F 2.8 and build quality seems fine...focuses fast too. So based on that experience if Pentax decides to do a deal with Tamron and 'Pentaxize' additional premium level Tamron lenses...if they are as good as what the 24-70 seems to be...how can anyone have an issue with that.
I used to be a purist (must come from my way back... English Puritan ancestry
) regarding camera equipment, but now, my view if it works real well...who cares. Certainly not moi.