If you like no-haggle pricing, it looks like the TLX popped up on TrueCar.com sometime this evening. I live in the DC area and it's quoting me prices up to $625 below MSRP for an I4 Tech.

Now that it's on TrueCar, I'd suspect that it will appear shortly on the Costco Auto Program site (which is administered by TrueCar, but is usually a fixed amount above invoice).

 

In the Palm Beach area they are showing about $600 above MSRP, with a disclaimer stating that "There are not enough recent sales transactions to display the Average Paid price because the 2015 Acura TLX is too new to the market."