The regent st store was my first experience of using Apple products. Back then Apple updated Macs.....
Yeah sigh, having the latest and greatest is always nice, and advancements in processor and graphics chips as well as the latest connectivity protocols often (but not always) seem to come later to the Mac line-up than they appear on the competition's models. You like to think that Apple does their due diligence perhaps more thoroughly, but I for one also wouldn't want to be tempted to knee-jerk update for every little improvement that comes along.
On balance, other than the odd 'quiet' incremental in-between-update, Apple mostly updates their Mac line up when there are at least several worthwhile improvements warranting a change of hardware for those in the market for a new computer. What really stands out at the moment is that 5-yr old (now discontinued) Thunderbolt Display. Apple has several options for introducing a stand-alone 5K display such as built-in custom graphics in their monitors, or a custom TCON such as what they currently employ in their 5K iMacs. But it looks more and more like they're waiting for Intel's CannonLake with (finally) promised DP1.4 support.
While we can no longer expect mind-blowing CPU and GPU improvements, I'm personally looking forward to Macs with consistent (multi-port) USB-C connectivity through their entire line-up (with Thunderbolt3 and USB3.1 Gen2 support), and hopefully a few legacy ports, as well as implementation of macOS Sierra's new
APFS file system with its improved security through integrated encryption, more precise time-stamping, SSD optimization speed improvements, much lower latency, and vastly increased storage capability.
It'll also be interesting to see whether Apple will replace the ⅛" headphone jack on the iMac with a Lightning port for wired usage of all the Lightning equipped headphones about to hit the market.