Lexington seems to have taken to HD like a duck to water. WKYT (CBS), a straggler in regards to syndicated programming in the market, threw the switch on all 4 of their syndicated programs (Regis & Kelly, Oprah, Wheel, J!) a few months ago.
The FOX and NBC affils have been airing HD programs, when available, for several months. The one station that's lagged behind is the ABC affiliate - I don't *think* they've gone to HD syndication yet, and their newscast just went HD a couple months ago - the last in the market by several months. By and large, though, if the program exists in HD, it's airing in HD here now.