The exchange rate change might make grey imports cheaper. To counter this, you might see more rebates and special offers rather than official price cuts.
When you see B&H and Adorama start to offer significant pricing alternatives through grey channels, then you'll see some rebates from CUSA that "just coincidentally" almost perfectly offset those pricing advantages. This has been the marketing scenario for a very long time. CUSA also will configure those rebates on what is actually available, what is popular, what is actually selling, and... what they have in their own inventories. There's nothing new to this at all.