Yeah, I'll admit to being a little disappointed that there isn't a completely new model, especially with all the anticipation and hype in the run up to the launch. I think those patents that surfaced some time ago may have contributed to this... it's easy to forget that a patent is often just a way for a manufacturer to "bagsie" an idea or concept, while not necessarily committing to actually putting it into production any time soon, if at all.
That said, the G series always was and still is a good vacuum. For all its downsides (and every cleaner has them), it does have a good track record for durability and reliability. It's fully repairable in the event something goes wrong, and it definitely cleans well. A long running design doesn't necessarily have to be a bad thing, because it gives a product the opportunity to evolve, work out any bugs and gain refinements. These are all attributes we tend to criticise other brands for NOT having, and looking at it that way I'm going to cut Kirby a little slack. Had they instead launched a plastic "me too" product with a bagless cyclone on the front and a half-assed set of tools on board, then we'd really have something to complain about.
I do like what they've done with the Avalir. The colour, handle design and bag graphics look great, a vast improvement on the Sentria which I disliked from day one. Really pleased to see the improvements to the shampooer, and look forward to seeing how it performs on hard floors. Once these start filtering through to the used market, at a sensible price, I might have to pick one up because this is the first new Kirby that has really caught my eye for a long time.