Sometime in the past month, ODOT installed a couple of shields on OR 153, making it finally officially signed in the field (only 20 years after its designation!). I saw them for the first time today, and here are photos of both:

This is at OR 153's eastern terminus on northbound OR 221 near Hopewell. There was no 153 junction signage on southbound 221, though.

This was on westbound 153 at its junction with OR 154. Oddly, this was the only shield they put up at this junction. There was no indication that continuing straight ahead puts you on 154. Instead, you have to drive it 1/2 a mile to see a confirming 154 shield (which you can see in a previous post of mine upthread). Also, there were no shields in view along either eastbound 153 or southbound 154 at the junction. I'm hoping ODOT will improve on things at this junction soon.
I drove the rest of OR 153 west to OR 18 in Bellevue, but saw no other 153 shields. No additional signage has been added to 154 since my prior post, either.
There has been a mini-flurry lately in the mid-Willamette Valley in finally posting shields for some of the 2002-3 routes, with 153 joining 154 and 164 in finally being officially signed. Add those to the newly-acquired OR 127 and OR 132 being signed, and it's been a relatively lively last few months in new signed routes. Hopefully more to come this year.