I use an ATMEGA16L-8AU (package=TQFP44) in my product that we buy and have mass programmed with our bootloader from Avnet. I just placed an order for 500ea with them and they came back with a lead time of 16 to 18 weeks. (I'm lights out in four weeks) The rep said they have zero blank devices on hand, but she is checking on the reason for the delay, such as obsolescence. Meanwhile but I would like to ask the community here if they know of a later version of the ATMEGA16 I can swap in using the exact same bootloader image and firmware. Question 2: Avnet has done a great job programing the devices, but whenever I order, I do knot know what to expect in terms of pricing and lead time. Any suggestions on a more down to earth component distributor who programs and caters to small niche product manufacturers ordering 500-ish?