Are i5 - 4690k prices going to drop any time soon with Computex coming up?

Doubtful. It was surprising they dropped as much as they did around the holidays during black friday and cyber monday to around $204-208 I believe making them cheaper than the previous 4670k. Intel prices may fluctuate some by $5 or so but rarely change. If anything they tend to hold value until they become outdated and once out of production can increase in price. As holyrage mentioned, comparable i5 models haven't changed in price from one generation to the next for the past 4yrs.