In one of the older laser flair related threads @CraigBroady said
"@EvanFoss and all, a little bit about what we’re doing here in engineering — apologies for not being super-present here. We’ve got a lot going on, and there are more of you than there are of us! First off, a spatial filter or collimator might indeed do the trick to improve your printer’s optics and produce better prints (in fact, we already use a collimator for the Form 1+ laser), but a lot of design and validation testing is required before issuing an engineering change order. "
That was Jan 26 would someone from formlabs please post an update on that.